ABBREVIATIONS AND ACRONYMS COMMONLY USED IN TECHNOLOGY
Technology uses acronyms and abbreviations without limit. Whether it is engineering or medical or space, it becomes hard to make out what technologist and their literature uses to convey the messages. You can find every now and then these technologists and technocrats throwing jargon like acronyms and abbreviations. occasionally these jargon make the investor or buyer of the technology products gets mad and hard to understand. This page will help you to sort out such situations some extend.
Abbreviations and Acronyms Used in Technology – A
A-S: Anti-spoofing
AC: Advisory Circular
AC or ac: Alternating current
A/C: Aircraft
A/c: Air conditioner
A/D: Analog/Digital converter
A/G: Air Ground
AAC: Aeronautical Administrative Communication
AAF: Associate Administrator for Airway Facilities
AAL: Alaskan Regional Headquarters
AAP: Advanced Automation Program
AAPO: Associate Administrator for the Performing Organization
AAR: Office of Aviation Research
AAR: Airport Acceptance Rate
AAS: Advanced Automated System
AASO: Associate Administrator of the Sponsoring Organization
AAT: Associate Administrator for Air Traffic
ABCP: Airborne Command Post
ABL: Allocated Baseline
ABPSK: Aviation Binary Phase Shift Keying
ABS: Automatic Blink System
AC: Alternating Current
ACAA: Air Carrier Association of America
ACARS: Aviation Communications Addressing and Reporting System
ACAS: Airborne Collision Avoidance System
ACC: Air Control Center
ACCC: Area Control Computer Complex
ACE: Central Regional Headquarters
ACEP: Airport Capacity Enhancement Plan
ACEPS: Air Traffic Control Center Critical/Emergency Power System
ACF: Area Control Facility
ACI: Adjacent Channel Interface
ACK: Acknowledge Signal
ACKCTL: Acknowledge Control
ACM: Availability Coverage Modeling
ACMS: Aircraft Condition Monitoring System
ACN: Engineering, Research and Development Service
ACO: Aircraft Certification Office
ACS: Active Control System
ACSE: Access Control and Signaling Equipment
Active Waypoint: A waypoint to or from which navigational guidance is being provided. For a parallel offset, the active waypoint may or may not be at the same geographical position as the parent waypoint. When not in the parallel offset mode (operating on the parent route), the active and parent waypoints are at the same geographical position.
ACU: Antenna Control Unit
ACV: Accuracy Validation
ACWP: Actual Cost of Work Performed
ACY: Atlantic City, NJ FAA Technical Center
ACDO: Air Carrier District Office
ADAP: Airport Development Aid Program
ADC: Air Data Computer/Analog to Digital Converter
ADD: Algorithm Description Document
ADF: Automatic Direction Finder
ADGE: Air Defense Ground Environment
ADI: Attitude Direction Indicator
ADIZ: Air Defense Indication Zone
ADL: Aeronautical Data-Link
ADLP: Aircraft Data Link Processor
ADLS: Aeronautical Data Link System
ADLVT: Aeronautical Data Link Validation Team
ADM: Administration Identifier/Acquisition Decision Memorandum
ADNS: ARINC Data Network Service
ADR: 1.Accumulated Delta Ranging/Architectural Design Review 2.Alternative Dispute Resolution
ADS: Automatic Dependent Surveillance
ADS-B: Automatic Dependant Surveillance-Broadcast
Advisory: An annunciation that is generated when crew awareness is required and subsequent crew action may be required; the associated color is unique but not red or amber/yellow. (Source AE: Antenna Electronics
AEA: Aircraft Electronics Association
AEEC: Airlines Electronic Engineering Committee
AEFT: Active Element Fault Tree
AEI: Auroral-E Ionization
AERA: Automated En Route Air Traffic Control
AES: Aeronautical Earth Station/Aircraft Earth Station
AF: Airway Facilities
AFB: Air Force Base
AFC: Automatic Frequency Compensation
AFCC: Air Force Communications Command
AFCS: Automatic Flight Control Systems
AFEPS: ACARS Front End Processing Systems
AFI: Authority and Format Identifier
AFII: Advanced Flight Inspection Initiative
AFOTEC: Air Force Operational Test & Evaluation Center
AFS: Flight Standards Service
AFSC: Air Force Systems Command
AFSPACECOM: Air Force Space Command
AFSS: Automated Flight Service Station
AFTN: Aeronautical Fixed Telecommunications Network
AGATE: Advanced General Aviation Transport Experiments
AGC: Automatic Gain Control
AGL: Above Ground Level
AGL: Great Lakes Region
AGS: Air/Ground System
AHRS: Attitude Heading Reference System
AHS: American Helicopter Society
AII: Accuracy Improvement Initiative
AIP: Airport Improvement Program
AIP: Aviation Information Publications
AIR: Aircraft Certification Service
AIX: Advanced Interactive Executive
AJ: Anti-Jamming
Along – Track Distance: The distance along the desired track from the waypoint to the perpendicular line from the desired track to the aircraft.
ALE: Automatic Link Establish
ALG: Logistics Service
ALP: Airport Layout Plan
ALSIP: Approach Lighting System Improvement Program
ALSOH: Automated L-band State of Health
ALSF: Approach Lighting System with Sequenced Flashing Lights
AMASS: Airport Movement Area Safety System
AM/PM: Amplitude Modulation-to-Phase Modulation
AMC: Aeronautical Mobil Communications/Aeronautical Center
AMCP: Aeronautical Mobil Communications Panel
AMS: Acquisition Management System
AMSS: Aeronautical Mobil Satellite Service
AMSS: Airborne Mobile Services System
ANA: Area Navigation Approach
ANC: Air Navigation Commission of ICAO
ANCP: Alternate Network Control Point
ANCT: Aircraft Network Control Terminal
AND: Associate Administrator for NAS Development
ANE: New England Regional Headquarters
ANH: Access Node Hub
ANICS: Alaskan National Airspace System Interfacility Communication Systems
ANM: Northwest Mountain Regional Headquarters
ANN: Program Director for Navigation and Landing
ANP: Actual Navigation Performance
ANSEP: Air Navigation Services Economic Panel
ANSI: American National Standards Institute
AOAS: Advanced Oceanic Automation System
AOC: Airport Obstruction Chart
AOC: Aircraft Operational Control/Aeronautical Operational Control
AOL: Airborne Optical Laser
AOP: Aeronautical OSI Profile
AOPA: Aircraft Owners and Pilots Association
AOR: Atlantic Ocean Region
AOR-E: Atlantic Ocean Region East
AOR-W: Atlantic Ocean Region West
AOS: Operational Support Services
AP: Acquisition Plan
APB: Acquisition Program Baseline
APC: Adaptive Predicative Coding/Aeronautical Passenger Comm.
APC: Acquisition Processing Cabinets
API: Application Program Interface
APL: Airport Pseudolites
APM: Associate Program Manager
APME: Associate Program Manager for Engineering
APML: Associate Program Manager for Logistics
APMNI: Associate Program Manager for NAS Implementation
APMSE: Associate Program Manager for Systems Engineering
APMT: Associate Program Manager for Test
APP: Annual Procurement Plan
APPS: Aeronautical Radio Facilities and Parts Provisioning System
Applications: Specific use of systems that address particular user requirements. For the case of GNSS, applications are defined in terms of specific operational scenarios.
APR: Automatic Position Reporting/Agency Procurement Request
APS: Acquisition Phase Summary
APV: Approach Procedure with Vertical guidance
AQPSK: Aviation Quadrature Phase Shift Keying
ARA: 1.Airborne Radar Approach 2.Administrator for Research & Acquisitions
ARAC: Aviation Regulatory Advisory Committe
ARAMT: ARA Management Team
ARC: Acquisition Review Committee
ARCS: Automatic Route Control System
ARD: Research and Development Service
Area Navigation (RNAV): Application of the navigation process providing the capability to establish and maintain a flight path on any arbitrary chosen course that remains within the coverage area of navigation sources being used. RNAV utilizing capabilities in the horizontal plane only is called 2D RNAV, while RNAV, which also incorporates vertical guidance, is called 3D RNAV. Time navigation (TNAV) may be added to either 2D or 3D systems. TNAV added to a 3D system is called 4D.
ARIG: Acquisition Reform Interim Guidance
ARINC: Aeronautical Radio, Inc.
ARM: Autonomous Ranging Mode
ARMS: Automated Risk Management System
ARQ: Automatic Repeat Request
ARS: Area Selector
ARSR: Air Route Surveillance Radar
ARTCC: Air Route Traffic Control Center
ARTS: Automatic Radar Terminal System
ASAG: Acquisition System Advisory Group
ASAS: Aviation Safety Analysis System
ASCII: American Standard Code for Information Interchange
ASIC: Application Specific Integrated Circuit
ASCQC: Aeronautical Satellite Communications Qualifications Center
ASD: Associate Administrator for Systems Engineering and Development
ASDE: Airport Surface Detection Equipment
ASE: Airborne System Error/NAS System Engineering Service
ASF: Additional Secondary Factor (related to Loran-C; ASF means the difference in propagation time between the transmitter and receiver for the actual path as compared to an all seawater path of the same distance)
ASIC: Application Specific Integrated Circuit
ASN or ASN2: Access Stack Node 2
ASO: Southern Regional Headquarters
ASOPT: Advanced System Operational Planning Team
ASORRF: Start of a Aircraft Receive Reporting Frame
ASORTCF: Start of a Aircraft Receive Terminal Control Frame
ASOS: Automated Surface Observing
ASR: Airport Surveillance Radar
ASP: 1.Acquisition Strategy Paper 2.Aviation Sequencing Program
ASPM: Aviation System Performance Metric
ASTA: Airport Surface Traffic Automation
ASW: Southwest Regional Headquarters
AT: Air Traffic
ATA: Air Transport Association
ATC: Air Traffic Control
ATCBI: Air Traffic Control Beacon Interrogator
ATCRBS: Air Traffic Control Radar Beacon System
ATCSCC: Air Traffic Control System Command Center
ATCT: Airport Traffic Control Tower
ATIDS: Airport Surface Target Identification System
ATE: Automatic Test Equipment
ATIS: Automatic Terminal Information Service
ATM: Air Traffic Management
ATN: Aeronautical Telecommunications Network
ATOMS: Air Traffic Operational Management System
ATR: Air Traffic Plans and Requirements Service
ATS: Air Traffic Service
ATSC: Air Traffic Services Communications
ATSMP: Air Traffic Services Message Processor
ATSOIT: Air Traffic Satellite Operational Implementation Team
ATSS: Air Traffic Services System
AUI: Attachment Unit Interface
AUTOVON: Automatic Voice Network
Availability: The availability of a navigation system is the ability of the system to provide the required function and performance at the initiation of the intended operation. Availability is an indication of the ability of the system to provide usable service within the specified coverage area. Signal availability is the percentage of time that navigational signals transmitted from external sources are available for use. Availability is a function of both the physical characteristics of the environment and the technical capabilities of the transmitter facilities.
AVCS: Attitude and Velocity Control Subsystems
AVLN: Automatic Vehicle Location and Navigation
AVN: Aviation System Standard
AVR: Associate Administrator for Regulation & Certification
AVPAC: Aviation VHF Packet Communications
AWIPS: Advanced Weather Interactive Processing System
AWOP: All Weather Operations Panel
AWP: Western Pacific Regional Headquarters B1: Hardware Requirement Specification
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – B
BA: Barometric Altitude – Geopotential altitude in the earths atmosphere above mean standard sea level pressure datum surface, measured by a pressure (barometric) altimeter.
BA: Bachelor of Arts
BBN: Basic Backup Network
BCD: Binary Coded Decimal
BCN: Backbone Concentrator Node
BCS: Buoy Communications System
BCWP: Budgeted Cost of Work Performed
BCWS: Budgeted Cost of Work Scheduled
BE: Binary Editor
BER: Bit Error Rate
BGR-AFSS: Bangor, ME Automated Flight Service Station
BI: Burst Interval
BIL: Billings, MT TRACON
BILL: Billing System
BIPM: International Bureau of Weights & Measures
BIT: Built-in Test
BITE: Built-in Test Equipment/Backward Inter-working Telephone Event
BL: Burst Length
BMN: Baseline Management Notice
BMV: Broadcast Message Validation
BNR: Binary Numbers
BOM: Bill Of Material
BONeS: Block Oriented Network Simulator
BOP: Bit-Oriented Protocol
BOS: Beginning Of Slot
BPF: Band Pass Filter
Bps: Bits Per Second
BPSK: Binary Phase Shift Keying
BS: Bachelor of Science
BSEE: Bachelor of Science, Electrical Engineering
BT: British Telecom
BTP: Baseline Transfer Plan
BTP: Burst Time Plan
BU: Block Update
BUEC: Backup Emergency Communication
BUFR: Binary Universal Form for Data Representation
BW: Bandwidth
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – C
C: Celsius
C-1: Correction Processor 1
C-2: Correction Processor 2
C&V: Correction and Verification
C-TO-l: C-band to L-band
C/A: Coarse/Acquisition
C/A-CODE: Coarse Acquisition Code
C/NO: Carrier-to-Noise-Density Ratio
C/SCSC: Cost/Schedule Control System Criteria
C/SSR: Cost/Schedule Status Reporting
CAA: 1. Cargo Airlines Association 2. Civil Aviation Authority
C3I: Command, Control, Communications, and Intelligence
CA: California
CAATS: Canadian Automated Air Traffic System
CAGE: Commercial and Government Entity
CAI: Contractor Acceptance Inspection
CAM: Cost Account Manager
CAP: Cost Account Plan
CAS: 1. Collision Avoidance System 2. Commercially Available Software 3. Cost Accounting Standards
CASB: Cost Account Standards Board
CASE: Computer Aided Software Engineering
CAT: Category
CAT-I: Category I
Caution: An annunciation that is generated when immediate crew awareness is required and subsequent crew action will be required; the associated color is amber/yellow. (Source CB: Clock Bias
CBB: Contractor Budget Base
CBM: Clock Bias Mean
CBA: Cost Benefit Analysis
CBD: Commerce Business Daily
CBI: Computer-Based Instruction
CC: Connection Confirmation
CC: Clock Correction
CCB: 1. Communication Control Block 2. Configuration Control Board 3. Change Control Board
CCC: Communications Control Circuit
CCD: Configuration Control Decision
CCIR: International Radio Consultative Committee
CCITT: International Telegraph and Telephone Consultative Committee
CCR: Constant Current Regulator
CCS: Command and Control Systems
CCU: Computer Control Unit
CCZ: Coastal Confluence Zone
CD: Compact Disk
CDB: Cold Bay FSS
CDG: Course Design Guide
CD-ROM: Compact Disk-Read Only Memory
CDI: Course Deviation Indicator
CDLS: Contract Data Requirement List
CDM: Collaborative Decision-Making
CDMA: Code-Division Multiple Access
CDR: Critical Design Review
CDRL: Contract Data Requirement
CDU: Control Display Unit
CE: Concept Exploration
CEA: Central Engineering Activity
CEP: Circular Error Probable
CF: Course-to-Fix
CERAP: Combined Enroute Radar Approach Control Facility
CERB: Cost Estimate Review Board
CFB: Contract Funding Brief
CFE: Communications Facilities Enhancement
CFE: Contractor-Furnished Equipment
CFIT: Controlled Flight into Terrain
CFNO: Current Frame Number
CFSR: Contract Funds Status Report
CGIC: Civil GPS Information Center
CHI: Computer Human Interface
CHIWG: Computer Human Interface Working Group
CI: Configuration Item
CID: Commercial Item Drawing
CIDS: Critical Item Development Specification
CIO: Conventional International Origin
CIP: Capital Improvement Plan
cm: Centimeters
cm/sec: Centimeters/Second
CIGNET: Cooperative International GPS Network
CIP: Capital Investment Plan
CIPP: Critical Infrastructure Protection Plan
CIS: Conventional Inertial System/Commonwealth of Independent States
CIT: California Institute of Technology
CLIN: Contract Line Item Number
CLK: Clock
cm: Centimeters
CM: 1. Configuration Management 2. Center of Mass 3. Corrective Maintenance
CMA: Configuration Management Administration
CMC: Canadian Marconi Corporation
CMCC: Consolidated Maintenance Control Center
CMD: Control C&V Mode
CMDR: Satellite Operations Crew Commander
CMLS: Contractor Maintenance Logistics Support
CMM: Capability Maturity Model
CMN: Control Motion Noise
CMP: Configuration Management Plan
CMTBF: Mean Time Between Mission Critical Failures
CMTP: Contractor Master Test Plan
CMU: Communications Management Unit/Computer Management Unit
CNI: Communications, Navigation, and Intelligence
CNMP: Capability Maturity Model
CNS/ATM: Communications, Navigation, and Surveillance/Air Traffic Management
CNS: Communications, Navigation, and Surveillance
CNSI: Common Network Security Interface
CO: Contracting Officer
COB: Close Of Business
COCO: Chief of the Contracting Office
CODEC: Coder-Decoder
COF: Continuity of Function
COI: Critical Operational Issue
COM: 1. Control C&V Operations and Maintenance 2. Cost of Money
Comm: Communications
COMSAT: Communications Satellite Corporation
COMSEC: Communications Security
CONOPS: Concept of Operations
CONS: Connector-Oriented Network Service
CONUS: Continental US; Conterminous/Contiguous US
CONV: Conversion
COP: Character-Oriented Protocol
COR: Correction Host Processor
COTR: Contracting Officers Technical Representative
COTS: Commercial Off-the-Shelf
CP: Reference Number for a Telephone Call
CP: Corrections Processor
CPC: Computer Program Component
CPCI: Computer Program Configuration Item
CPDLC: Controller-Pilot Data Link Communication
CPF: Central Processing Facility
CPFS: Computer Program Functional Specification
CPI: Consumer Price Index
CPM: Carrier Link Frequency 1575.42 MHz
CPR: Cost Performance Report
CPU: Central Processing Unit
CR: Connection Request
CRC: Cyclic Redundancy Check
CRDA: Cooperative Research and Development Agreement
CRF: Connection Refused
CRL: Communication Research Laboratory
CRISD: Computer Resources Integrated Support Document
CRM: Collision Risk Model
CRPA: Controlled Radiation Patterned Antenna
CRR: Common Reference Receiver
CRS: Contractor Repair Service
CRT: Cathode Ray Tubes
CS: 1. Civil Signal 2. Control Segment
CSAR: Configuration Status Accounting Report
CSC: Computer Software Component
CSCI: Computer Software Configuration Item
CSE: Common Support Equipment
CSEP: Common Systems Engineering Process
CSMA/CD: Carrier Sense Multiple Access with Collision Detection
CSOC: Consolidated Space Operations Center (Falcon AFS)
CSPR: Report Cost/Schedule Performance
CSQPP: Computer Software Quality Program Plan
CSTP: Contractor Support Transition Plan
CSU: Computer Software Unit/Channel Service Units
CSWP: Common Software Process
CT: Connecticut
CTCOR: Clock and Time Coordinator
CTEMP: Contractor Test and Evaluation Master Plan
CUE: Common User Element
CV: Correction and Verification
CW: Continuous Wave
CWBS: Contract Work Breakdown Structure
CY: Calendar Year
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – D
D: Delivery Confirmation Bit
DA: Decision Altitude
DAA: Designated Approving Authority
DA (H): Decision Altitude (Height)
DAL: Development Assurance Level
DAS: Data Approval Sheet
DAU: Determine Alarm or Update
DAY: Dayton AFSS
DLAP: Data Link Application Processor
dB: Decibels
db/*K: Decibels per degree Kelvin
dBHz: Decibel Hertz
dBi: Decibel relative to isotropically radiated power
Dbic: Decibels above Isotropic
DBil: (Decibels Isotropic Linear)
DBL: Development Baseline
dBW: Decibel relative to 1 Watt
DBW/M2: Decibel relative to 1 Watt per square meter
D.C.: District of Columbia
DC: Direct Current
DCAA: Defense Contract Audit Agency
DCACAS: Data Collection, Analysis, and Corrective Action System,
DCE: Data Communication Equipment
DCH: Datum Crossing Height
DCMDR: Deputy Satellite Operations Crew Commander
DCN: Design Change Notice
DCP: Data Collection Processing CSCI; Data Collection Processor
DCT: Dynamic Configuration Tool
DD: 1. Data Dictionary 2. Detailed Design
DDC: Direct Digital Connect
DDE: Data Dictionary Entry
DDR: Derived Design Requirements
DDS: Direct Digital Synthesizer
DDT: Design Data Transmittal
DEC: Data Circuit-Terminating Equipment
DED: Data Editing
DEDS: Data Entry and Display Subsystem
deg: Degree
DEMARC: Demarcation
DEMVAL: Demonstration and Validation
DER: Designated Engineering Representative
DF: Direction Funding
DFD: Data Flow Diagram
DFR: Detailed Financial Review
DGNSS: Differential Global Satellite Navigation System
DGPS: Differential Global Positioning System
DH: Decision Height
DHCP: Dynamic Host Configuration Protocol
DI: Data Integration and Calculation
DID: Data Item Description
DL: Data Link
DLL: Delay Lock Loop
DLO: Data Link Only
DLP: Data Link Processor
DLS: Data Link Service
DLSC: Defense Logistics Services Center
DLT: Digital Linear Tape
DM: Data Management
DMA: Defense Mapping Agency
DME: Distance Measuring Equipment
DMN: Data Multiplexing Network
Dn: Time Control Correction
DNS: Domain Name System
DoC: Department of Commerce
DoD: Department of Defense
DoDISS: Department of Defense Index of Specifications and Standards
DOM: Derivatives of Observables with Respect to Parameters
DOORS: Dynamic Object Oriented Requirements System
DOP: Dilution Of Precision
DOT: Department of Transportation
DOTS: Dynamic Ocean Tacking System
DP: Datum Point
DPA: Delegation of Procurement Authority
DPP: SCP Data Preprocessor
dpi: Dots per inch
DPR: Differential Pseudorange
DPRC: Differential Pseudorange Correction
DPS: Digital Power Supply
DPSSF: Data Processing and Software Simulation Facility
DQT: Design Qualification Test
DR: Delta Range/Dead Reckoning
D.R.: Dead Reckoning
DRAM: Direct Random Access Memory
DRE: Differential Range Error
DRM: Design Room Manual
DRMAP: Data Responsibility Matrix/Acceptance Plan
DRMS: Distance Root Mean Square (not to be confused with Sigma)
DRO: Dispute Resolution Officer
DRS: Data Reduction Software
DRT: Diagnostic Rhyme Test
DS: Define Test Scenario
DSLOC: Delivered Software Lines Of Code
DSP: Digital Signal Processing
DSO: Digital signal, level zero
DSR: Data Set Ready
DSR: Display System Replacement
DSSS: Decision Support System Services
DSU: Data Service Unit
DT&E: Development Test and Evaluation
DTC: Design-to-Cost/Dry Term Correction
DTE: Data Terminal Equipment
DTE: Data Termination Equipment
DTR: Data Terminal Ready
DV: Data Validation
DVMRP: Distance Vector Multicast Routing Protocol
DVRS: Digital Voice Recorder System
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – E
E&R: Exchange and Repair
E-IGRP: Enhanced Interior Gateway Routing Protocol
EA: Environmental Assessment
EAC: Estimate at Completion
EAROM: Electrically Alterable Read Only Memory
EC: 1. Ephemeris CORRECTION 2. Executive Counsel
ECC: Error Checking and Correction
ECD: Envelope-to-Cycle Discrepancy
ECEF: Earth Centered Earth Fixed
ECEST: Ephermis and Clock Estimator
ECI: Earth-centered Inertial
ECM: Engineering Change Memorandum
ECP: Engineering Change Proposal
ECR: Engineering Change Request
ECU: European Currency Unit
EDC: Engineering Document Control
EDM: 1. Electronic Distance Measurement 2. Engineering Development Model
EDO: Extended Data Output
EDS: Explosives Detection System
EEM: Electronic Equipment Modification
EFAS: Extended Final Approach Segment
EFIS: Electronic Flight Instrument System
EGM: Earths Gravity Model
EGNOS: European Geostationary Navigation Overlay Service
EHF: Extremely High Frequency
EIA: Electronic Industries Association
EICAS: Engine Indicating and Crew Alerting System
EIRP: Effective Isotropic Radiated Power
EIRP: Effective Isotropic Radiated Power
EIS: Environment Impact Statement
El: Glidepath Angel (approach path elevation angle)
ELT: Emergency Locating Transmitter
EMC: Electro-Magnetic Compatibility
EMC: Electro-Magnetic Capacity
EMI: Electro-Magnetic Interference
EMP: Electro-Magnetic Pulse
EMR: Electromagnetic Radiation
ENB: Engineering Notebook
EO: Engineering Order
EOL: End Of Life
EOP: Earth Orientation Parameters
EOS: End Of Slot
EOS: Electro-Optical Segment
EPROM: Erasable Programmable Read Only Memory
EPS: Electrical Power (Sub) system
EQS: Equipment Selector
Eq: Equation
ER: En Route
ER-NPA: En Route through Nonprecision Approach
ERD: Estimated Range Deviation
ERL: Environmental Research Laboratories
ERP: Effective Radiated Power
ERRMP: Error Multipath
ERS: Early Resolution System
ES: Earth Station/End-System
ESC: Electronics Systems Center
ESD: Electrostatic Sensitive Discharge
ESD: Electrostatic Discharge
ESL: Economic Service Life
ESLOC: Equivalent Software Lines Of Code
ESP: Encapsulating Security Payloads
ETA: Estimated Time of Arrival
ETD: Explosives Trace Detection
ETMS: Enhance Traffic Management System
ETVS: Enhanced Terminal Voice Switch
EUL: End User Location
EVM: Earned Value Management
EVS: Enhanced Vision System
EWAAS: End-State Wide Area Augmentaition System
EXCOM: Executive Committee
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – F
F&E: Facilities and Equipment
F-SAT: Final Site Acceptance Test
FAA: Federal Aviation Administration
FAALC: Federal Aviation Administration Logistics Center
FAAQ: Federal Aviation Administration Headquarters
FAATC: Federal Aviation Administration Technical Center
FAB: Federal Executive Advisory Board
FACES: Flight Management System Aeronautical Telecommunications Network Calibration through Enhanced Surveillance
FAE: FAA Acquisition Executive
FAF: Final Approach Fix
FANS: Future Air Navigation System
FAR: Federal Acquisition/Aviation Regulations
FAS: Final Approach Segment
FAST: FAA Acquisition System Toolset
FASTF: FAA Satellite Test Facility
FAT: Factory Acceptance Test
FATP: Factory Acceptance Test Plan
FAWP: Final Approach Waypoint
FBL: Functional Baseline
FCA: Functional Configuration Audit
FCC: Federal Communications Commission
FCP: Fast Correction Processing
FCS: Frame check sequence
FQC: Frequency Corrections
FCS: Flight Control System
FC: Fault Detection
FD: Format Simulated Data
FDA: Frequency Distribution Amplifier
FDAD: Full Digits ARTS Display
FDE: Fault Detection and Exclusion
FDIO: Flight Data Input and Output
FDMA: Frequency Division Multiple Access
FDX: Full Duplex
FEC: Forward Error Correction
FED: Federal
FES: Fast Ethernet Switch
FFRDC: Federally Funded Research and Development Center
FH: Frame-level header
FI: Fault Isolation
FID: Format Identifier Field
FIP: Federal Information Processing
FIR: Flight Information Region
FIRMR: Federal Information Resource Management Regulation
FIS: Flight Information Service
FL: Flight Level
FMC: Flight Management Computer
FMEA: Failure Modes and Effects Analysis
FMECA: Failure Mode, Effects, and Criticality Analysis
FMI: Flexible Modular Interface
FM: Frequency Modulation
FMS: Flight Management System
FMT: Format Message
FOB: Freight On Board
FOC: Full Operational Capacity/Capability
FOM: Figure of Merit
FONSI: Finding of No Significant Impact
FOUO: For Official Use Only
FP: Frequency Plan
FPAP: Flight Path Alignment Point
FPGA: Field Programmable Gate Arrays
FPS: Fixed Position Surveillance
FQR: Formal Qualification Review
FQT: Formal Qualification Testing
FQT: Formal Qualification Test
FRACAS: Failure Reporting and Corrective Action System
FRACAS: Failure Reporting, Analysis, and Corrective Action System
FRB: Failure Review Board
FRDF: Facility Reference Data File
FRE: Fast Routing Engine
FRP: Federal Radionavigation Plan
FRPA: Fixed Radiation Patterned Antenna
FSAS: Flight Service Automation System
FSD: Full-Scale Development
FSD: Full Scale Deflection
FSEP: Facility, Service, and Equipment Profile
FSL: Forecast Systems Laboratory
FSM: Firmware Support Manual
FSN: Frame Sequence Number
FSS: Federal Supply Schedule
FT&E: Feasibility Test Plan
FTA: Fault Tree Analysis
FTE: Flight Technical Error
FTI: FAA Telecommunications Infrastructure
FTP: File Transfer Protocol
FTS: Federal Telecommunications Service
FTS2000: File Transfer Service 2000
FVS: Functional Verification System
FX: Frequency Excision
FXNONAP: FX and Nonlinear Adaptive Processing
FY: Fiscal Year
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – G
g: Acceleration of Gravity
g: Gram
G: Gain
G/T: Gain/Temperature
GA: General Aviation/Ground Antenna
GA&VF: General Aviation and Vertical Flight
GAO: General Accounting Office
GARB: GPS Alignment Reference Point
GB: Gigabyte
GBAS: Ground Based Augmentation System
GBI: Ground-Based Inerting
GCCS: Geostationary Communication and Control Segment
GCS: 1. Geostationary Communication Segment 2. GEO Communications Subsystem
GDLP: Ground Data Link Processor
GDM: General Development Model
GDM: Ground Model
GDOP: Geometric Dilution of Precision (in x,y,z,t for GPS)
GEG: GPS Ephemeris Geometry Processing
GEO: Geostationary Earth Orbit
GEOS: Geostationary Earth Orbit Satellite
GEP: GEO Ephemeris Processing
GES: Ground-Earth Station
GFE: Government-Furnished Equipment
GFI: Government Furnished Information
GFP: Government Furnished Property
GFS: Government Furnished Service
GG: GPS/GEO Data Collector
GHZ: Gigahertz (1 billion Hz)
GIB: Ground Integrity Broadcast
GIB/WAD: Ground Integrity Broadcast/Wide-Area Differential
GIC: Global Positioning System Integrity Channel
GICE: Government Independent Cost Estimate
GIP: Government Industry Partnership
GIPSY: GPS Inferred Positioning System
GIS: Geographic Information System
GIST: Global navigation satellite system In-Service Test
GIVE: Grid Ionospheric Vertical Error
GIVEI: Grid Ionospheric Vertical Error Indicator
GIWG: GPS International Working Group
GL: Ground Level
GL: GUS LRU Simulator
GLONASS: Global Orbiting Navigation Satellite System
GLONASS: Global Navigation Satellite System (Russia)
GLS: GNSS Landing System
GMC: Ground Monitoring and Control
GME: Gross Navigation Error
GMS: Ground Monitoring Equipment
GMS: Ground Monitoring Station
GMT: Greenwich Mean Time
GNE: Gross Navigational Error
GNG: GEO Navigation Data Generation
GNSS: Global Navigation Satellite System (ICAO)
GNSSU: GNSS (Landing) Unit
GOES: Geostationary Operational Environmental Satellite
GoM: Gulf of Mexico
GOS: Geocenter Offset and Coordinate Scaling
GOSPAR: GPS OCS Performance Analysis and Reporting
GP: 1. GUS Processing 2. GCS Processor
GPA: Glide Path Angle
GPI: Ground Point of Intercept
GPIP: Glide Path Intercept Point
GPIRU: Global Positioning Inertial Reference System
GPS: Global Positioning System
GPSIC: GPS Information Center
GPST: Global Positioning System Time
GR: Ground Reference
GRI: Ground Repetition Rate
GRIB: Gridded Binary
GRP: Host-Group Identifier
GRR: Group Repetition Rate
GRS: Geodetic Reference System
GS: GP Simulator
GSA: General Services Administration
GSO: Satellite Ground System Operator
GST: GEO Satellite Transponder
GTS: Global Timing System
GUI: Graphical User Interface
GUS: GEO Uplink Sub System
GUS: Ground Uplink Station
GUS_H: GEO Uplink Subsystem HWCI
GUSP: GUS Processor
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – H
H/W: Hardware
HAL: Horizontal Alert Limit
HAT: Height Above Touchdown
HCI: Human Computer Interface
HD: High Dynamic
HDLC: High-level Data Link Control
HDOP: Horizontal Dilution of Precision (in x,y)
HDOP: Horizontal Dilution Of Precision
HDOP: Horizontal Dilution of Position
HDTV: High Definition Television
HDUE: High Dynamic User Equipment
HE: Human Engineering
HEDAD-M: Human Engineering Design Approach Document-Maintainer
HF: 1. High Frequency 2. Human Factors
HFE: Human Factors Engineering
HFP: Human Factors Plan
HGAS: High Gain Avionics System
HID: Host Interface Device
HIRF: High Intensity Radiation Fields
HILS: Helicopter Instrument Lighting System
HITS: Hughes Information Technology Systems
HLE: Higher Layer Entity
HMI: Hazardously Misleading Information
HNL: Honolulu, HI AFSS
HOCM: House Of Cards Model
HOCSR: Host/Oceanic Computer System Replacement
HOL: High Order Language (computer language)
HOT: Hands-On Training
HOW: Handover Word
HP: Hewlett Packard
HPA: High Power Amplifier
HPE: Horizontal Position Error
HPET: Horizontal Position Error Threshold
HPE: Horizontal Position Error
HPL: Horizontal Protection Level
HPR: Hardware Problem Reports
HQ: Headquarters
HRI: Hazard Risk Index
HRs: Hazard Records
Hrs: Hours
HRT: Hazard Review Team
H S I: Horizontal Situation Indicator
HST: Host Identifier
HTSC: Hughes Technical Services Company
HTZ: Helicopter Touchdown Zone
HUD: Heads Up Display
HUL: Horizontal Uncertainty Level
HVAC: Heating, Ventilation, and Air Conditioning
HW: Hardware
HWCI: Hardware Configuration Item
Hz: Hertz
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – I
I-3: INMARSAT-3
ICMM: Integrated Capability Maturity Model
I/F: Intermediate Frequency
I/O: Input/Output
I/S: Interference-to-Signal ratio
IA: Investment Analysis
IACSP: International Aeronautics Communications Service Provider
IADS: Iceland Air Defense System
IAF: Initial Approach Fix
IAG: International Association of Geodesy
IAP: Initial Approach Point/Instrument Approach Procedures
IAPA: Instrument Approach Procedures Automation
IAR: Investment Analysis Report
IATA: International Air Transport Association
IAU: International Astronomical Union
IAW: In Accordance With
IAWP: Initial Approach Waypoint
IBLS: Integrated Beacon Landing System
IBM: International Business Machines
IBP: Integration Build Plan
ICAO: 1. International Civil Aviation Organization 2. Intercard
IC: Ionospheric Correction
ICC: 1. Ionospheric Correction Computation 2. Iono Corrections Capability
ICD: 1. Interface Control Document/International Code Designator 2. Interface Control Document
ICDLS: Interim Contractor Depot and Logistics Support
ICMLS: Integrated Contractor Maintenance and Logistics Support
iCMM: Integrated Capability Maturity Model
ICMLS: Interim Contractor Maintenance and Logistics Support
ICMP: Internet Control Management Protocol
ICO: 1. Intermediate Circular Orbit 2. Initial Operating Capability
ICS: Interim Contractor Support
ICWG: Interface Control Working Group
ID: 1. Identification 2. Identifier
IDC: Interface Control Document
IDD: Interface Design Document
IDI: Initial Domain Identifier
IDM: Integrity Data Monitoring
IDM: Independent Data Monitor
IDR: Internal Design Review
IDV: Independent Data Verification
IDV: Independent Design Verification
IEC: International Electro technical Commission
IEEE: 1. International Electrical and Electronic Engineers 2. Institute of Electrical Engineers
IERS: International Earth Rotation Service
IETF: Internet Engineering Task Force
IETM: Interim Electronic Technical Manuel
IF: 1. Intermediate Frequency 2. Interface
IFM: Interface Management
IFR: Instrument Flight Rules
IGEB: Interagency GPS Executive Board
IGES: Initial Ground Earth Station
IGMP: Internet Group Management Protocol
IGP: Ionospheric Grid Point
ILM-TRACON: Wilmington, NC TRACON
ILS: 1. Instrument Landing System 2. Integrated Logistics Support
ILSMT: Integrated Logistics Support Management Team
ILSP: Integrated Logistics Support Plan
IM: Intermodulation
IMAS: Initial Missed Approach Segment
IMC: Instrument Meteorological Conditions
IMCS: Interim Monitor and Control Software
IMT: Integrated Management Team
IMU: Inertial Measurement Unit
INMARSAT: International Maritime Satellite Organization
INS: Inertial Navigation System
INU: Inertial Navigation Unit
IOA: Independent Operational Assessment
IOC: Initial Operational Capability
IOD: Issuance Of Data
IODC: Issurance Of Data Clock
IODE: Issurance Of Data Ephermis
IODI: Issurance Of Data Ionosphere
IODP: Issurance Of Data PRN mask
IODS: Service Issue of Date
ION: Institute of Navigation
IONO: Ionospheric Determination Processing Algorithm
IOR: Indian Ocean Region
IOS: Indian Ocean Station
IOT: Inter-Organizational Transfers
IOT&E : Independent/Integration Operational Test and Evaluation
IP: Internet Protocol
IPACG: Informal Pacific ATC Coordination Group
IPB: Illustrated Parts Breakdown
IPC: Interprocess Communication
IPDS: Integrated Product Development System
IPLT: Integrated Product Leadership Team
IPP: 1. Ionospheric Pierce Point 2. Integrated Program Plan
IPR: In Process Review
IPT: Integrated Product Team
IRD: Interface Requirements Documents
IRIS: International Radio Interferometric Surveying
IRMP: Information Resources Management Plan
IRP: Information Resources Protection
IRS: 1. Inertial Reference System 2. Interface Requirements Specification
IRT: Integrated Requirement Team
IRU: Inertial Reference Unit
IS: Intermediate-System
IS-IS: Intermediate System-Intermediate System Protocol
ISAP: Integrated Support and Acquisition Plan
ISC: Initial System Capability
ISDN: Integrated Services Data Network
ISM: In-Service Management
ISO: 1. International Organization for Standardization 2. International Standards Organization
ISP: 1. Internet Service Provider 2. Integrated Support Plan
ISPACG: Informal South Pacific ATC Coordination Group
ISR: In-Service Review
ISS: Information System Security
ISSC: Information System Security Cerifier
ISSCA: ISS Certification Agent
ISSG: Integrated Satellite Signal Generator
ISSM: Information System Security Manager
ISSP: Information System Security Plan
ISSPP: Integrated System Safety Program Plan
ISSS: Initial Sector Suite System
ISU: Initial Signal Unit
IT: Information Technology
IT&E: Integration Test and Evaluation
ITU: International Telecommunication Union
ITWS: Integrated Terminal Weather System
IV&V: Independent Verification and Validation
IVD: Ionospheric Vertical Delay
IVE: Ionospheric Vertical Error
IWAAS: Initial Wide Area Augmentation System
iWAASs: IV&V WAAS simulator
IWP: Intermediate Waypoint
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – J
J/S: Jamming-to-Signal Power Ratio
JAI: Joint Acceptance and Inspection
JAT: Joint Acceptance Testing
JCAB: Japan Civil Aviation Bureau
JD: Julian Date
JFK: John F. Kennedy Airport, NY
JHU/APL: Johns Hopkins University Applied Physics Laboratory
JNU: Juneau AFSS
JOTFOC: Justification for Other Than Full and Open Competition
JPL: Jet Propulsion Laboratory
JPO: GPS Joint Program Office (El Segundo, CA)
JRC: Joint Resource Council
JSS: Joint Surveillance System
JST: Japanese Standard Time
JTIDS: Joint Tactical Information Distribution System
JV: (ARINC/SITA) Joint Venture
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – K
K: Kelvin
KA: Radio Frequency Ka
KB: Kilobyte
Kbps: Kilobits per second
KCP: Kinematic Carrier Phase
KCPT: Kinematic Carrier Phase Tracking
KDD: Kokusai Denshin Denwa
KDP: Key Decision Point
Kg: Kilogram
kHz: Kilohertz
km: kilometer
KPA: Klyston Power Amplifier
Kts: Knots
Ku: Radio Frequency Ku
KVA: Kilovoltampere
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – L
L-BAND: Frequency from 390Mhz to approximately 1.55Ghz
L1: Carrier Link Frequency 1575.42Mhz
L1: GPS Standard Positioning Service L-band ranging signal
L2: Carrier Link Frequency 1227.6 Mhz
L2: GPS Precision Positioning Service L-band ranging signal
L3: Carrier Link Frequency 1385.05 Mhz
LAAS: Local Area Augmentation System
LADGPS: Local Area Differential GPS
LAN: Local Area Network
LANE: LAN Emulation
LAPB: Link Access Procedure Balanced
LAX: Los Angeles, CA Airport
LBS: L-band Subsystem
LCC: Life Cycle Cost/Leased Common Carrier
LCCE: Life Cycle Cost
LCD: Liquid Crystal Display
LCN: 1. Logical Channel Number 2. LSA Control Number 3. Local Communications Network
LCP: Long-Term Correction Processing
LD: Low Dynamic
LDA: Localizer Directional Aid
LDGPS: Local Differential GPS
LDR: Labor Distribution Reporting
LDRCL: Low Density Radio Communications Link
LDS: Large Size Display Subsystem
LEAN: Low-Elevation Antenna Nuller
LED: Light Emitting Diode
LEO: Low Earth Orbiting
LEP: Linear Error Probable
LF: Low Frequency
LFRD: Logistics Funding Requirements Document
LGA: LaGuardia, NY Airport
LGAS: Low Ground Avionics System
LGPV: Lateral Guidance with Precision Vertical
LHC: Left Hand Circular
LIB: Local-area Integrity Broadcast
LINCS: Leased Interfacility NAS Communication System
LLC: Logical Link Control
LLWAS: Low-Level Wind shear Alert System
LNA: Low Noise Amplifier
LNAV: Lateral Navigation
LNB: Low-noise block down-converter
LO: Local Oscillator
LOA: Limited Operational Assessment
LOB: Line of Business
LOC: Location Identifier
LOE: Level of Effort
LOF: Loss of Function
LOGSA: Logistics Support Activity
LOI: Loss of Integrity
LOM: Compass Locator at ILS Outer Marker
LON: Loss of Navigation
LOP: Line Of Position
LORA: Level Of Repair Analysis
LORAN: Long Range Navigation System
LORAN-C: Long Range Navigation-C System
LORIPP: Loran Integrity Performance Panel
LOS: 1. Line Of Sight 2. Loss of Signal
LPA: Linear Power Amplifier
LPV: Localizer Performance with Vertical Guidance
LRE: Latest Revised Estimate
LRIP: Low-Rate Initial Production
LRR: Low-Range Radar
LRRAP: Long Range Resource Allocation Planning
LRU: Line Replaceable Unit
LSA: Logistics Support Analysis
LSAP: Logistics Support Analysis Plan
LSAR: Logistics Support Analysis Record
LSB: Last Significant Bit
LSB: Least Significant Bit
LSDU: Link Service Data Unit
LSR: Least Squares Residual
LSU: Long Signal Unit
LTC: Long Term Correction
LTCP: Long-Term Correction Processing
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – M
M: More Data Bit
m: Meter
M max CT: Maintenance Maximum Corrective Time
M mean CT: Maintenance Mean Corrective Time
M&C: Monitor and Control
m/s: Meters per Second
m/s2: Meters per Second Squared
MAGR: Miniaturized Aviation GPS Receiver
MAHP: Missed Approach Holding Waypoint
MALSR: Medium Intensity Approach Lighting System with Runway Indicator Light
MAP: Missed Approach Point
MAPC: Major Acquisition Policy Council
MAPP: Major Acquisition Policy and Procedures
MAR: Major Acquisition Review
MASPS: Minimum Aviation System Performance Standards
MAWP: Missed Approach Waypoint
MaxDT: Maximum Downtime
MB: Megabyte
mbps: Millibits Per Second
Mbps: Megabits per second
MC: Multiple Carrier
MCC: Mission Control Center
MCF: Metroplex Control Facility
MCCP: Message Correction Control Part
MCDU: Multifunction Control Display Unit
Mchips: Megachips
MCP: Message Center Processor
Mcps: Mega-chips/second
MCOTS: Modified Commercial Off The Shelf
MCP: Message Center Processor
MCS: 1. Multifunction Control Station/Maritime Communications Subsystem 2. Master Control Station
MCV: Monitor C&V
MD: Medium Dynamic
MDA: Minimum Descent Altitude
M-Demo: Maintainability Demonstration
MDCRS: Meteorological Data Collection and Reporting Service
MDP: Maintenance Data Processing System
MDT: Mean Down Time
MDVP: Modification Development and Verification Plan
MEDLL: Multipath Estimating Delay Lock Loop
MESS: Message Estimation
MET: Multipath Elimination Technique
MGS: Master Ground Station
MGY-AFSS: Dayton, OH Automated Flight Service Station
MH: Message Handling
MHz: Megahertz
MIAWS: Medium Intensity Airport Weather Service
MIB: Management Information Block
Micro-EARTS: Microprocessor En Route Automated Radar Tracking System
MIJI: Meaconing, Intrusion, Jamming and Interference
MIL: Military
MIL-SPEC: Military Specification
MIL-STD: Military Standard
MINOS: Novtels ASIC
MIOPS: Military Operations
MIPR: Military Interdepartmental Purchase Request
MIPS: Master Integrated Program Schedule
MJD: Modified Julian Date
ML: Message Length
MLS: Microwave Landing System
MLE: Microwave Landing Engineer
mm: millimeter
mm/s: millimeter per second
mm/s2: millimeter per second squared
M/M: Maintainer/Manager
MMD: Mean Mission Duration
MMIC: Monolithic Microwave Integrated Circuit
MMP: MSAS Message Processor
MMR: Multi Mode Receiver
MNA: Mission Need Analysis
MNPS: Minimum Navigation Performance Specification
MNS: Mission Need Statement
MNT: MSAS Network Time
MO: Message Output
MOA: Memorandum Of Agreement
MOC: Management Operations
Mode-S: Mode select; discrete addressable secondary radar system with data-link
MON: Minimum Operational Network
MOP: Message Output Processing
MOPS: 1. Minimum Operations Performance Standards 2. Minimum Operational Performance Schedule
MOS: Mean Opinion Score
MOSPF: Multicast Open Shortest Path First
MOU: Memorandum Of Understanding
MOW: Maintenance-Of-Way
MP: Maintenance Plan
MPPGs: Major Procurement Program Goals
MPS: Meters Per Second
MPS: Maintenance Processor System
mr: Milliradians
MRA: Mutual Recognition Arrangement
MRD: Monitor Receiver Data
MRT: Modified Rhyme Test
ms: millisecond
MS: Monitor Station
MSA: Major System Acquisition
MSAS: MTSAT Satellite-based Augmentation System
MSB: Most Significant Bit
MSBR: Master Schedule Baseline Report
MSDP: Monitor Station Data Processor
MSE: Mean Square Error
MSEE: Master of Science, Electrical Engineering
MSG: MSAS Signal Generator
MSL: Mean Sea Level (altitude above)
MSL: Mean Sea Level
MSN: Manufacturing Sequence Numbers
MSP: Minneapolis St. Paul (Airport ID)
MSS: Master Schedule System
MSS: Mobile Satellite Service
MSSR: Monopulse Secondary Surveillance Radar
MTBCF: Mean Time Before Critical Failure
MTBCM: Mean Time Before Corrective Maintenance
MTBDE: Mean Time Before Downing Events
MTBF: Mean Time Between Failures
MTBH: Mean Time Between Hazards
MTBM: Mean Time Between Maintenance
MTBO: Mean Time Between Outages
MTBPM: Mean Time Before Preventive Maintenance
MTP: Master Test Plan
MTSAT: Multi-function Transport Satellite
MTTR: Mean Time To Repair/Mean Time To Restore
MTTRF: Mean Time To Restore Functions
MU: Management Unit
MUX: Multiplexer
MVS: Multiple Virtual System (Operating System)
MWE: Model Work Environment
mW-hr/cm2: Milliwatt hours per centimeter squared
mW/cm2: Milliwatts per centimeter-squared
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – N
N: Newtons
N: Number of Sus in a burst
N/A: Not Applicable
N/I: Non-Intrusive
NACK: No Acknowledgement
NACO: National Aeronautical Charting Organization
NAD-27: North American Datum-1927 coordinate system
NAD-83: North American Datum-1938 coordinate system
NADIN: National Airspace Data Interchange Network
NAILS: National Airspace Integrated Logistics Support
NAILSMT: NAILS Management Team
NAK: Negative Acknowledgment
NAKRES: Negative Acknowledgment Signal and Reservation
NANU: Notice Advisory to Navstar Users
NANUS: Navigation Notices to Users
NARACS: National Radio Communications Systems
NAS: National Airspace System
NASA: National Aeronautical and Space Administration
NASISLTP: NAS Integration/System Level and Test Plan
NASIT&E: NAS Integrated Test and Evaluation
NASSRS: NAS System Requirements Specification
NAT: North Atlantic
NATCA: National Air Traffic Controller Association
NATS: National Air Traffic Services
NATSPG: North Atlantic System Planning Group
NAV: navigation
NAVAID: Navigational Aid
NAVAIR: Naval Air Systems Command
NAVSTAR: Navigation System with Timing and Ranging
NBP: New Bedford Panoramics
NC: National Center
NC: Network Connection
NCA: National Command Authority
NCC: Network Control Circuit
NCD: Network Computing Devices
NCEP: National Centers for Environmental Prediction
NCF: Network Control Facility
NCLF: National Civilian Labor Force
NCO: Number Controlled Oscillator
NCO: Numerically Controlled Oscillator
NCP: NAS Change Proposal
NCS: Network Communication Subsystem
NCS: Network Coordination Station
NCT: Network Control Terminals
NDB: Non-Directional Beacon
NDBC: National Data Buoy Center
NDI: Non-Developmental Item
NDS: 1. Non-Developmental Software/Nuclear Detonation Detection System 2. Non-Developmental Software
NE: Network Expansion
NEC: Nippon Electric Corporation
NES: Navigation Earth Station
NESDIS: National Environmental Satellite Data and Information Service
NEXCOM: Next Generation Air/Ground Communications
NEXRAD: Next Generation Radar
NFS: Network File System
NGS: 1. National Geodetic Service 2. National Geodetic Survey
NH: Northern Hemisphere
NI: Non-Interlaced
NICS: NAS Inter-facility Communications System
NIMS: NAS Infrastructure Management System
NIC: Network Information Center
NIS: Network Information System
NIST: National Institute of Science and Technology
NIU: Network Interface Unit
NLS: Network Logic Schedule
Nm: Nautical Mile
NMC: National Meteorological Center
NMS: Navigation Management System
NOAA: National Oceanic and Atmospheric Administration
NOC: Network Operations Center
NOS: National Ocean Survey
NOTAM: Notice To Airmen
NP: NES Processing CSCI
NPA: Non-Precision Approach
NPCI: Network Protocol Control Information
NPD: Navigation Payload
NPDU: Network Protocol Data Unit
NPRM: Notice of Proposed Rule Making
NPV: Non-Precision Approach with Vertical Guidance
NQSS: Network Quality of Service Subsystem
NRE: Non-Recurring Engineering
NRZ: Non-return to zero
NS: Non-Standard C/A
NSDU: Network Service Data Unit
NSE: Navigation System Error
NSEC: Nanosecond
NSI: Network Subsystem Interface
NSP: Non-Standard P-code
NSTB: National Satellite Test Bed
NSY: Non-Standard Y-code
NTE: Not To Exceed
NTP: National Transportation Policy
NTSC: National Television Standards Committee
NTT: Nippon Telegraph and Telephone
NUT: Nutation
NVREC: Navigation Recovery
NWS: National Weather Service
NWSTG: National Weather Service Telecommunications Gateway
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – O
O&M: Operations and Maintenance
OAC: Oceanic Area Control Center
OALP: Outgoing Aeronautical Logic Procedures
OASIS: Oceanic Area System Improvement Study
OASIS: Operational and Supportability Implementation System
OATS: Office Automation Technology Services
OBI: Orbit Integration
OBS: Omni Bearing Selector
OBAD: Old But Active Data
OCA: Obstacle Clearance Area
OCC: Operations Control Center
OCD: Oceanic Clearance Delivery
OCONUS: Outside Continental United States
OCP: Obstacle Clearance Panel
OCS: Operational Control Segment
OCXO: Oversized Controlled Crystal Oscillator
OD: Orbit Determination Processing Algorithms
ODAPS: Oceanic Display and Planning System
ODC: 1. Orbit Determination Control 2. Other Direct Charges
ODE: Orbit Determination Data Editing
ODF: Oceanic Development Facility
ODG: Orbit Determination Geometry
ODR: Office of Disputes Resolution
OEAAA: Obstacle Evaluation and Airspace Assessment
OEI: O & M External Interface
OEM: Original Equipment Manufacturer
OEP: Operational Evolution Plan
OIS: Orbital Insertion Subsystem
OIS: Obstruction Identification Surface
OJT: On-the-Job Training
OLDI: On-Line Data Interchange
OM: Operations and Maintenance
OMB: Office of Management and Budget
OMC: Observed Minus Computed
OMEGA: Ground-based VLF Navigation System
OMT: Object Modeling Technique
OOOI: Out Off On In
OOS: Out Of Service
OpEval: Operational Evaluation
OPI: Office of Primary Interest
OPM: Opportunistic PM
OPR: Offices of Primary Responsibility
OPS: Operations
OPT: Organizational Performance Target
ORD: Operation Readiness Demonstration
ORD: Operational Requirements Document/Observed Range Deviations
ORDA: Open Radar Data Acquisition
ORPG: Open System Radar Generator
OS: 1. O&M Simulator 2. Operating System
OSI: Open Systems Interconnection
OSM: Oceanic Systems Manager
OSP: Operational System Parameter
OSPF: Open Shortest Path First
OST: Office of the Secretary Of Transportation
OT: Operational Testing
OTA: Other Transition Authority
OT&E: Operational Test and Evaluation
OT&E/I: OT&E Integration
OT&E/O: OT&E Operation
OT&E/S: OT&E Shakedown
OTH: Over the Horizon
OTP: Operational Test Plan
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – P
P: Precision
P-Channel: Precision Code Channel
P-CODE: Precision Code
P-SAT: Preliminary Site Acceptance Test
P-STATIC: Precipitation Static
P/A: Parameter/Assembly
P3I: Preplanned Product Improvement
PA: Precision Approach
PAMS: Program Acquisition Management System
PANS: Procedures for Air Navigation Services
PANS-OPS: PANS Aircraft Operations
PAPI: Precision Approach Path Indicator
PAR: Precision Approach Radar
PARB: Program Assessment Review Board
PARC: Performance-Based Operations Aviation Rulemaking Committee
PASS: Professional Airways System Specialists
PAT&E: Production Acceptance Test and Evaluation
PATS: Precision Automated Tracking System
PBL: Product Baseline
PC: Personal Computer
PCA: 1. Positive Control Area/Physical Control Audit 2. Physical Configuration Audit
PCCB: Program Configuration Control Board
PCI: 1. Peripheral Component Interconnect 2. Protocol Control Information
PCM: Pulse Code Modulation
PCO: Phase Center Offset
PCR: 1. Problem Change Request 2. Problem/Change Report
PCS: Prelaunch Checkout Station
PCU: Power Conditioning Unit
PD: 1. Program Directive 2. Preliminary Design
PDC: Pre-Departure Clearance
PDF: Probability Density Functions
PDH: Productdefinition header
PDMS: Product Data Management System
PDN: Public Data Network
PDOP: 1. Position Dilution of Precision (in x, y, z) 2. Position Dilution of Precision
PDR: 1. Preliminary Design Review 2. Problem/Change Report
PDU: Protocol Data Unit
PEM: Production Engineering Trials
PEP: Program Execution Plan
PERMON: Performance Manager
PERT: Program Evaluation and Review Technique
PET: Pacific Engineering Trials
PFD: Power Flex Density
PHA: Preliminary Hazard Analysis
PHL: Preliminary Hazard List
PHMI: Probability of Hazardously Misleading Information
PHS&T: Packaging, Handling, Storage and Transportation
PID: Process Input Data
PIDS: Prime Item Development Specification
PIM: Protocol Independent Multicast
PIM-SM: Protocol Independent Multicast-Sparse Mode
PIP: Program Implementation Plan
PIREPs: Pilot Reports
PL: Pseudolite
PLL: Phase Lock Loop
PLO: Phase Locked Oscillator
PLP: Packet Layer Protocol
PLRS: Position Location and Reporting System
PM: 1. Program Manager/Phase Modulation 2. Programmer Months 3. Preventive Maintenance
PMO: Program Management Office
PMP: Program Master Plan
PMP: Performance Measurement Plan
PMR: Program Management Review
PN: Pseudo Noise
PNT: Position Navigation and Timing
PO: Performing Organization
POC: Point of Contact
POM: Program Overview Meeting
POP: Point Of Presence
POR: Pacific Ocean Region
POSIX: Point Open System Interface for UNIX
POST: Power on Self Test
PPP: Point to Point Protocol
PPPI: Pre-Planned Product Improvements
PPS: Precise Positioning Service
pps: Pulse per second
PPOS: Present Position
PPX: Parallel Packet Express
PQE: Program Quality Engineer
PQT: Preliminary Qualifications Test
PR: Procurement Request/Pseudorange
PRAP: Problem Analysis Plan
PRB: Pre-Review Board
PRC: 1. Pseudorange Correction 2. Precession
PRCf: Pseudorange Correction fast
PRD: 1. Process Receiver Data 2. Production and Deployment
PRE: Pseudorange Error
PRM: Precision Runway Monitor
PRN: Pseudo Random Noise
PROM: Programmable Read Only Memory
PRR: Program Readiness Review/Production Readiness Review
PRS: Provisioning Requirements Statement
PSAC: Plan for Software Aspects of Certification
PSAT: Preliminary Site Acceptance Test
PSE: Peculiar Support Equipment
PSI: Precise Systems, Inc.
PSK: Phase Shift Keying
PSM: Procurement Strategy Meeting
PSN: 1. Packet-Switched Network 2. Packet-Switched Network
PSR: Program Status Report
PSTN: Public Service Telephone Network
PT: Product Team
PTD: Provisioning Technical Document
PTO: Paid Time Off
PTSN: Public Switched Telephone Network
PTT: Post , Telephone and Telegraph
PTTI: Precise Time and Time Interval
PUID: Product Unique Identifier
PVC: Permanent Virtual Circuit
PVT: Positioning, Velocity and Timing
PWBS: Program Work Breakdown Structure
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – Q
Q: Qualcomm Corporation
QA: Quality Assurance
QC: 1. Quality Controller 2. QualComm Corporation
QCPP: Quality Control Program Plan
QOS: Quality of Service
QPSK: Quadrature Phase Shift Keying
QRO: Quality and Reliability Officer
QU: Queuing Unit
QVL: Qualified Vendor List
QS: Quantity Surveyour
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – R
R&D: Research and Development
R&M: Reliability and Maintainability
R/W: Runway
RAIM: Receiver Autonomous Integrity Monitor
RAM: Random Access Memory
RAP+ID: Reserved Alternate Path with Immediate Diversion
RAS: Resource Allocation Subcommittee
RB: Reference Burst
RCAG: Remote Communications Air-Ground
RCCB: Regional Configuration Control Board
RCE: Radio Control Equipment
RCL: Radio Communications Link
RCNSP: Required Communication, Navigation and Surveillance Performance
RCOM: Recovery Communication
RCR: Routing & Circuit Restoral
RCS: Reaction Control Subsystem
rcvr: Receiver
RD: R-channel used for Data
RD: Requirements Document
R&D: Research and Development
RDA: Radar Data Acquisition
RDP: Runway Datum Point
RDSS: Radio Determination Satellite Service
RDT&E: Research and Development Test and Evaluation
RDVS: Rapid Deployment Voice Switch
RE&D: Research Engineering and Development
REDAC: R,E&D Advisory Committee
REIL: Runway End Identifier Lights
RET: Return
RF: 1. Radio Frequency 2. Radius-turn-to-fix
RFC: 1. Reservation Forthcoming Signal 2. Request For Comment 3. River Forecast Center
RFD: Request For Deviation
RFI: Radio Frequency Interference
RFM: Radio Frequency Monitor
RFO: Request for Offer
RFP: Request For Proposal
RFU: Radio Frequency Unit
RFU: Radio Frequency Uplink Subsystem
RFW: Request For Waiver
RGCS: Review of the General Concept of Separation
RGCSP: Review of the General Concept of Separation Panel
RGD: Rate Group Data
RH: Relative Humidity
RHC: Right Hand Circular
RHCP: Right Hand Circular Polarization
RID: Review Item Discrepancy
RINEX: 1. Receiver Independent Exchange 2. Receiver Independent Exchange Format
RIP: Routing Information Protocol
RISC: Reduced Instruction Set Computer
RL: WRE LRU Simulator
RLG: Ring Laser Gyro
RLS: Reliable Link Service
RM&A: Reliability, Maintainability and Availability
RMA: Reliability, Maintainability and Availability
RMB: Risk Management Review
RMD: Removable Media Device
RMI: Radio Magnetic Interference
RMI: Radio Magnetic Indicator
RMM: Remote Maintenance Monitoring
RMMS: Remote Maintenance Monitoring System
RMP: Risk Management Plan
RMPP: Risk Management Program Plan
RMS: 1. Remote Maintenance Monitoring 2. Root Mean Square 3. Requirements Management System 4. Remote Monitoring Subsystem
RNAV: Random Navigation/Area Navigation
RNP: Required Navigation Performance
RNPC: Required Navigation Performance Capability
ROA: Request Of Assistance
ROM: 1. Read Only Memory 2. Rough Order of Magnitude
RPD: Resource Planning Data
RPG: Radar Project Generator
RPI: Research Project Initiative/Runway Point of Intercept
RPU: Receiver Processing Unit
RPV: Remotely Piloted Vehicle
RQA: Request for Acknowledge Signal
RR: 1. Repeat Request 2. Record of WRE data
RRC: Range-Rate Corrections
RS: 1. Reed Solomon 2. Remote Station 3. WRS Network Simulator
RSC: Raytheon Systems Company
RSCIP: Remote Surveillance Communications Interface Processor
Rsma: R-channel used for NSC Functions
RSPA: Research and Special Programs Administration of DOT
RSPL: Recommended (or Replacement) Spares Parts List
RSS: Root-Sum Squared
RSU: Remote Status Unit
RSVP: Resource Reservation Protocol
RTA: Required Time of Arrival
RTC: Real Time Control
RTCA: Radio Technical Commission for Aeronautics
RTCA: Requirements and Technical Concepts for Aviation
RTCA, Inc.: A not-for profit organization
RTCM: Radio Technical Commission for Maritime Service
RTG: Real Time Gipsy
RTOD: Real Time Orbit Determination
RTS: Remote Tracking System
RTX: Retransmission Message
RUC: Rapid Update Cycle
RVR: Runway Visual Range
RWP: Real-time Weather Processor
RWY: Runway
Rx: Receiver
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – S
SICAS: SSR Improvements and Collision Avoidance System
SICASP: SSR Improvements and Collision Avoidance System Panel
SID: Standard Instrument Departure
SIG: (Telephony) Signaling Process
SIGGEN: Signal Generator
SIIR: Specification Issue Identification and Resolution
SIR: Screening Information Request
SIS: Signal-In-Space
SIT: 1. System Integration Test 2. System Integration Testing
SJU: San Juan Airport
SL: Safety Level
SLEP: Service Life Extension Program
SLOC: Software Lines of Code
SLOC: Source Line Of code
SLR: Satellite Laser Ranging
SLS: System Level Specification
SM: 1. Space Mode 2. Solar-Magnetic
SMC: System Management and Communication
SMGCP: Surface Movement and Guidance Plan
SMI: Select and Monitor Input Data Source
SMIT: System Management Interface Tool
SMO: System Management Office
SMIR: Software Management Indicators Report
SMP: Schedule Message Processing
SMS: Service Monitoring System
SMTBF: Series MTBF
SN: Sub Network
SNAPIT: Satellite Navigation Automated Program Information Tool
SNMP: Simple Network Management Protocol
SNR: Signal-to-Noise Ratio
SNUG: Satellite Navigation Users Group
SNTB: Satellite Navigation Test Bed
SOA: Service Order Agreement
SOATRF: Start Of Aircraft Transmit Reporting Frame
SOATTFC: Start Of Aircraft Transmit Terminal Control Frame
SOD: Satellite Orbit Determination
SOH: State Of Health
SOIT: Satellite Operational Implementation Team
SOITDF: Start Of Inbound Transmit Data Frame
SOITMF: Start Of Inbound Transmit Master Frame
SOO: Satellite Operations Officer
SORD: System Operational Requirements Document
SORDF: Start Of Receive Data Frame
SORMF: Start Of Receive Master Frame
SORSF: Start Of Receive Super Frame
SOT: Solid Earth Tides
SOW: Statement Of Work
SP: Safety Processor
SPA: System Performance Assessment
SPB: Site Program Bulletin
SPD: Software Product Specification
SPEC: Specification
SPEC: Standard Performance Evaluation Corporation
SPI: 1. Schedule Performance Index 2. System Performance and Integrity
SPIR: Site Preparation Installation Report
SPIT: Software Process Improvement Team
SPIT: Satellite Procedures Implementation Team
SPITE: Switching Processing Interface Telephony Event
SPO: Satellite Program Office
SPR: Software Problem Report
SPROCET: Safety Process Engineering Team
SPS: 1. Standard Positioning Service 2. Software Product Specification
sps: Symbols per second
SQA: Software Quality Assurance
SQM: Signal Quality Monitor
SRAM: System Requirements Allocation Matrix.
SRB: Specification Review Board
SRCA: Safety Requirements Criteria Analysis
SRM: System Resource Monitor
SRR: 1. Software Requirements Review 2. System Requirements Review
SRS: Software Requirements Specification
SS: 1. Space Segment/Structure Subsystem 2. System Specification
SSALR: Simplified Short Approach Lighting System with Runway Alignment
SSC: Software Support Center
SSDD: System/Segment Design Document
SSEI: Systems Software Engineering Issues
SSG: Satellite Signal Generator
SSNL: Satellite Sub-Network Layer
SSO: Source Selection Officer
SSP: 1. Source Selection Plan 2. System Safety Program
SSPP: System Safety Program Plan
SSPPR: System Safety Program Progress Report
SSR: 1. Secondary Surveillance Radar/System Spec Review 2. Software Specification Review
SSS: Satellite Signal Simulator
SSU: Subsequent Signal Unit
SSWG: 1. Separation Standards Working Group 2. System Safety Working Group
ST: Singapore Telecom
ST-2: Internet Streams Protocol, Version 2
STACK: Last-in; First Out Holding Buffer
STAR: Standard Terminal Arrival Route
STARS: Standard Terminal Automation Replacement System
STB: Site Technical Board/Satellite Test Bed
STC: Supplemental Type Certificate
STD: 1. Standard 2. Software Test Description
STEL: Stanford Telecom
STF: System Test Facility
STLDD: Software Top level Design Document
STP: Software Test Plan
STR: 1. Software Test Report 2. Software Trouble Report
SUA: Special Use Airspace
SU: Soviet Union/Signal Unit
SUM: Softwares Users Manual
SV: 1. Space Vehicle 2. Satellite Vehicle
SVC: Service
SVGA: Superior Video Graphics Adapter
SVM: Service Volume Model
SVP: Software Verification Plan
SW: Software
SWG: Software Working Group/Satellite Working Group
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – T
T&E: Test and Evaluation
T&M: Time and Materials
T&R: Translated and Rotated
TAC: Technical Assistance Contract
TACAN: Tactical Air Navigation
TAE: Transportation Acquisition Executive
TAI: International Atomic Time (Temps Atomique International)
TAM: Transportation Acquisition Manual
TASA: Task and Skills Analysis
TAV: Time to Alarm Validation
TBD: To Be Determined
TBP: To Be Provided
TBR: To Be Resolved
TBS: To Be Supplied
TC: 1. Type Certification 2. Tropospheric Correction 3. Terrestrial Communications
TCAS: Traffic Air Alert Collision Avoidance System
TCC: Terminal Control Circuit
TCCC: Tower Control Computer Complex
TCH: Threshold Crossing Height
TCN: Terrestrial Communications Network
TCP: 1. Transmission Control Protocol 2. Threshold Crossing Point
TCPI: To Complete Performance Index
TCS: 1. Terrestrial Communications System 2. Thermal Control Subsystem
TD: Time Difference/technical Director
TDB: Barycentric Dynamic Time (Temps Dynamique Barycentrique)
TDLS: Tower Data-Link Service
TDM: Time Division Multiplex
TDMA: Time Division Multiple Access
TDOF: Two Degrees Of Freedom
TDOP: Time Dilution Of Precision
TDP: Technical Data Package
TDRSS: Tracking and Data Relay Satellite System
TDS: Time Distribution Subsystem
TDT: Terrestrial Dynamic time (Temps Dynamique Terrestre)
TDWR: Terminal Doppler Weather Radar
TDZ: Touchdown Zone
T/PS: Technical Engineering and Program Support
TEA: Test, Evaluation and Acceptance
TEC: Total Electron Content
TEI: Transformation from ECEF to Geocentric Inertial Coordinate System
TELNET: Network Terminal Protocol
TEMP: Test and Evaluation Master Plan
TERPS: Terminal Instrument Procedures Standards
TET: Technical Evaluation Team
TEWG: Test and Evaluation Working Group
TF: To-From
TFTP: Trivial File Transfer Protocol
TGT: Technical Guidance Team
THR: Threshold
TIA: Type Inspection Authorization
TIB: 1. Technical Instruction Book 2. Technical Information Book
TIM: Technical Interchange Meeting
TIP: Threat Image Projection
TIS: Traffic Information Service
TIWG: Test Integration Working Group
TKE: Track Angle Error
TLI: Transport Layer Interface
TLS: Target Level-of-Safety
TLS: Transponder Landing System
TLT: Tracking, Telemetry and Control
TMC: Technical Management Committee
TMS: Testbed Master Station
TNDD: Terrestrial Network Design Document
TNIFR: Terminal Navigation Instrument Flight Rules
TO: Technical Officer
TOA: Time Of Applicability
TOC: Table Of Contents
TOD: Time Of Day; Top of Descent
TOR: Technical On-site Representative
TOW: Time Of Week
TOU: Time of Year
TPI: Technical Performance Index
TPM: Technical Performance Measurement
TPP: Technical Performance Parameter
TPRC: Test Policy Review Committee
TPS: 1. Transport Protocol Selector 2. Test Program Set
TR: Test Run Scenario
TRACON: Terminal Radar Approach Control
TRB: Technical Review Board
TRD: Test Requirements Document
TRDRE: Terminal Radar Digitize, Replacement & Establish
TRO: Troposphere
TRP: Troposphere Parameters
TRR: Test Readiness Review
TRS: TDMA Reservation Synchronizer (Block and Process)
TSARC: Transportation System Acquisition Review Council
TSE: Total System Error
TSO: Technical Standard Order
TSPI: Time-Space Position Indicator
TSS: 1. Test Support Software 2. Test Support System
TT&C: Tracking, Telemetry and Control
TTA: 1. Time-To-Alarm 2. Time to Alert
TTAC: Test Tube Advisory Committee
TTFF: Time To First Fix
TTL: 1. Transistor Logic 2. Transistor Transistor Logic
TTSF: Time To Subsequent Fix
TUP: Telephone User Part of CCITT Signaling System #7
TVSR: Terminal Voice Switch Replacement
TWIP: Terminal Weather Information for Pilots
Tx: Transmitter
TXSU(N): Process for Transportation of a burst of N sus (block TTP)
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – U
U/L: Up Link
UD: User Data
UDC: Compute UDRE Range Difference
UDP: 1. User Datagram Protocol 2. User Diagram Protocol
UDR: Compute UDRE
UDRE: User Differential Range Error
UDRE: User Differential Range Estimate
UDREI: User Differential Range Estimate Indicator
UE: User Equipment
UEN: Upper, East, North
UERE: User Equivalent Range Error
UETF: User Equipment Test Facility
UHF: Ultra High Frequency (470 890 MHz)
UHNE: User Horizontal Navigation Error
UFIR: Upper Flight Information Region
UIVE: User Ionoshperic Vertical Error
UL: Underwriters Laboratories
UNDGEN: Upload Navigation Data Generator
UP: User Data Process (Network Layer)
UPC: User Position Computation
UPM: 1. User Position Monitor 2. UT1 and Polar Motion
UPS: Uninterruptible Power Supply
URA: User Range Accuracy
URE: User Range Error
URSI: International Radio Science Union
US: United States
USAF: United States Air Force
U.S.C.: United States Code
USCG: United States Coast Guard
USGS: United States Geological Survey
USN: U.S. Navy
USNO: United States Naval Observatory
UTC: Universal Time Coordinated
UTP: Unshielded Twisted Pair
UUT: Unit Under Test
UW: Unique Word
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – V
VAC: Volts Alternating Current
VAL: Vertical Alert Limit
VASI: Visual Approach Slope Indicator
V&V: Verification and Validation
VCO: Voltage Controlled Oscillator
VDD: Version Description Document
VDC: Volts Direct Current
VDL: VHF Data Link
VDOP: Vertical Dilution Of Precision
VE: Vertical Error
VECP: Value Engineering Change Proposal
VEG: Verify External GIVE
VERN: VHF Extended Range Network
VFC: Verify Fast Corrections
VFWG: Vertical Flight Working Group
VHF: Very High Frequency
VHP: Vertical host Processor
VFR: Visual Flight Rules
VGA: Video Graphics Adapter
VGN: Verify GEO Navigation Data
VHF: Very High Frequency (54 to 216 MHz)
VIC: Verify Ionospheric Corrections
VID: Vendor Item Drawing
VIS: Visible
VLBI: Very Long Baseline Interferometry
VLF: Very Low Frequency
VLT: Verify Long-Term Corrections
VMC: Visual Meteorological Conditions
VME: Versa Module Euro Card
VNAV: Vertical Navigation
VOR: Very High Frequency Omnidirectional Ranging
VORTAC: 1. Combined VOR and TACAN 2. VHF Omni Range/Tactical Air Navigation
VPE: Vertical Position Error
VPET: Vertical Position Error Threshold
VPL: Vertical Protection Level
VPN: Virtual Private Network
VRRP: Voice Recorder Replacement Program
VRTM: Verification Requirements Traceability Matrix
VRTX: Virtual Real Time Executive
VS: versus
VSBP: Voice Switch By-Pas
VSWR: Voltage Standing Wave Radio
VTF: Vector-to-Final (Approach)
VVASI: VASI Visual Approach Slope Indicator
VUL: Vertical Uncertainty Level
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – W
W: Watts
W/S: Workstation
WA: Washington
WAAS: Wide-Area Augmentation System
WAD: Work Authorization and Delegation
WADGPS: Wide Area Differential GPS
WAN: Wide Area Network
WARP: Weather and Radar Processor
WBS: Work Breakdown Structure
WCRB: WAAS Configuration Review Board
WCRP: WAAS Change Request Process
WD: Weather Data Collector
WDGPS: Wide-area Differential Global Positioning System
WDM: Wave Division Multiplex
WDOP: Weighted Dilution Of Precision
WEI: WAAS External Interface
WFO: Weather Forecast Office
WGO: WNT to GPS Offsets
WGS-72: World Geodedic Survey 1972
WGS: World Geodedic Survey
WGS-84: World Deodedic System-1984 Coordinate System
WIB: Wide-area Integrity Broadcast
WIF: WAAS Interface
WIM: Wide-area Integrity Monitor
WIP: Work In Progress
WIPP: WAAS Integrity Performance Panel
WIS: WAAS Ionospheric SW
WJHTC: William J. Hughes Technical Center
WLF: WNT Linear Fit
WMO: World Meteorological Organization
WMP: WAAS Message Processor
WMS: Wide-Area Master Station
WMS_H: Wide-area Master Station HWCI
WN: Week Number
WNT: WAAS Network Time
WNTT: WAAS Network Time Tag
WOB: Women Owned Business
WORM: WAAS Obsolescence and Refresh Methodology
WP: Waypoint
WPPS: Work Package Planning Sheets
WRE: 1. WAAS Reference Element 2. Wide Area Reference Equipment
WRS: Wide Area Reference Station
WRS_H: Wide-Area Reference Station HWCI
WRT: With Respect To
WSG: WAAS Signal Generator
WSM: Wide area System Monitor
WSP: Weather Systems Processor
WTMS: WAAS Training and Maintenance Systems
WUPS: WAAS User Position Solution
WV: Water vapor
WX: Weather
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – X
XOR: Exclusive-or
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – Y
Y-code: Encrypted DoD Information on L2
ABBREVIATIONS AND ACRONYMS USED IN TECHNOLOGY – Z
Z: Zulu time
ZAB: Albuquerque Area ARTCC (Albuquerque, NM)
ZAN: Anchorage Area ARTTC (Anchorage, AK)
ZAU: Chicago Area ARTTC (Aurora, IL)
ZBW: Boston Area ARTCC (Nashua, NH)
ZDC: Washington Area ARTTC (Leesburg, VA)
ZDV: Denver Area ARTTC (Longmont, CO)
ZFW: Fort Worth Area ARTCC (Euless, TX)
HNL: Honolulu Area ARTCC (Honolulu, HI)
ZHU: Houston Area ARTTC (Houston, TX)
ZJX: Hillard Area ARTCC (Hillard, FL)
ZKC: Kansas City Area ARTCC (Olathe, KS)
ZLA: Los Angeles Area ARTCC (Palmdale, CA)
ZLC: Salt Lake City Area ARTCC (Salt Lake City, UT)
ZMA: Miami Area ARTCC (Miami, FL)
ZME: Memphis Area ARTCC (Memphis, TN)
ZMP: Farmington Area ARTCC (Farmington, MN)
ZNY: New York Area ARTCC (Ronkonkoma, NY)
ZOA: Oakland Area ARTTC (Fremont, CA)
ZOB: Oberlin Area ARTTC (Oberlin, OH)
ZSE: Seattle Area ARTCC (Seattle, WA)
ZSU: San Juan Area ARTTC (San Juan, Puerto Rico)
ZTL: Atlanta Area ARTCC (Hampton, GA)
2DRMS: 2 x Distance Root Mean Square
I hope this list of abbreviations and acronyms used in technology would be way more helpful to all, whoever has been trying to find out the full form of these abbreviations.
