NAVSTAR GPS Related Acronyms and Abbreviations
List of Acronyms
Downloaded from the USCG GPSIC, 3/95
AE - Antenna Electronics
A/D - Analog to Digital
AFB - Air Force Base
AFI - Automatic Fault Indication
AFS - Air Force Station
AHRS - Attitude and Heading Reference System
AIMS - Airspace Traffic Control Radar Beacon System IFF
Mark XII System
A/J - Anti-Jamming
AOC - Auxilliary Output Chip
A-S - Anti-Spoofing
ASIC - Application Specific Integrated Circuit
ATE - Automatic Test Equipment
BCD - Binary Code Decimal
BIH - Bureau International de L'Heure
BIPM - International Bureau of Weights and Measures
BIT - Built-In-Test
BPSK - Bi Phase Shift Keying
C/A-code - Coarse/Acquisition-Code
CADC - Central Air Data Computer
CDMA - Code Division Multiplex Access
CDU - Control Display Unit
CEP - Circular Error Probable
CMOS - Complementary Metal Oxide Semiconductor
C/No - Carrier to Noise Ratio
CRPA - Controlled Radiation Pattern Antenna
CSOC - Consolidated Space Operations Center
CW - Continuous Wave
DAC - Digital to Analog Converter
dB - Decibel (X = 10 Log X dB)
10
DGPS - Differential GPS
D-Level - Depot Level
DLM - Data Loader Module
DLR - Data Loader Receptable
DLS - Data Loader System
DMA - Defense Mapping Agency
DoD - Department of Defense
DOP - Dilution of Precision
dRMS - Distance Root Mean Square
DRS - Dead Reckoning System
DT&E - Development Test and Evaluation
ECEF - Earth-Centered-Earth-Fixed
ECP - Engineering Change Proposal
EDM - Electronic Distance Measurement
EFIS - Electronic Flight Instrument System
EM - Electro Magnetic
EMCON - Emission Control
ESGN - Electrically Suspended Gyro Navigator
FAA - Federal Aviation Administration
FMS - Foreign Military Sales
FOM - Figure Of Merit
FRPA - Fixed Radiation Pattern Antenna
FRPA-GP - FRPA Ground Plane
GaAs - Gallium Arsenide
GDOP - Geometric Dilution of Precision
GMT - Greenwich Mean Time
GPS - Global Positioning System
HDOP - Horizontal Dilution of Precision
HOW - Hand Over Word
HSI - Horizontal Situation Indicator
HV - Host Vehicle
HQ USAF - Headquarters US Air Force
ICD - Interface Control Document
ICS - Initial Control System
IF - Intermediate Frequency
IFF - Identification Friend or Foe
I-Level - Intermediate Level
ILS - Instrument Landing System
INS - Inertial Navigation System
ION - Institute of Navigation
IOT&E - Initial Operational Test and Evaluation
IP - Instrumentation Port
ITS - Intermediate Level Test Set
JPO - Joint Program Office
J/S - Jamming to Signal Ration
JTIDS - Joint Tactical Information Distribution System
L - GPS primary frequency, 1575.42 MHz
1
L - GPS secondary frequency, 1227.6 MHz
2
LEP - Linear Error Probable
LRIP - Low Rate Initial Production
LRU - Line Replaceable Unit
LO - Local Oscillator
mB - Millibar
MCS - Master Control Station
MCT - Mean Corrective Maintenance Time
6
MHz - Megahertz (10 Hz)
MLV - Medium Launch Vehicle
MmaxCT - Maximum Corrective Maintenance Time
MOU - Memorandum of Understanding
M/S - Metres per Second
MSL - Mean Sea Level
MTBF - Mean Time Between Failure
MTBM - Mean Time Between Maintenance
N/A - Not Applicable
NAV-msg - Navigation Message
NOSC - Naval Ocean Systems Center
NRL - Naval Research Labratory
-9
NS - Nanosecond (10 second)
NSA - National Security Agency
NTDS - Navy Tactical Data System
NTS - Navigation Technology Satellite
OBS - Omni Bearing Select
OCS - Operational Control System
O-Level - Organization Level
OTHT - Over The Horizon Targeting
PC - Personal Computer
P-Code - Precise Code
PDOP - Position Dilution of Precision
PLSS - Precision Location Strike System
3
P I - Pre Planned Product Improvement
-6
PPM - Parts Per Million (10 )
PPS - Precise Positioning Service
PPS-SM - PPS Security Module
PRN - Pseudo Random Noise
PTTI - Precise Time and Time Interval
PVT - Position Velocity and Time
RAM - Reliability and Maintainability
RCVR - Receiver
RF - Radio Frequency
RMS - Root Mean Square
RNAV - Area Navigation
RSS - Root Sum Square
RT - Remote Terminal
RTCA - Radio Technical Commission for Aeronautics
RTCM - Ratio Technical Commission for Maritime Services
S/A - Selective Availability
SAMSO - Space and Missile Systems Organization
SBB - Smart Buffer Box
SC - Special Committee
SEP - Spherical Error Probable
SI - International System of Units
SIL - System Integration Labratory
SINS - Shipborne INS
SPS - Standard Positioning Service
SRU - Shop Replacable Unit
STDCDU - Standard CDU
TACAN - Tactical Air Navigation
TAI - International Atomic Time
TBD - To Be Determined
TDOP - Time Dilution of Precision
TFOM - Time Figure Of Merit
TTFF - Time to First Fix
UE - User Equipment
UERE - User Equivalent Range Error
UHF - Ultra High Frequency
USA - United States of America
USNO - US Naval Observatory
UT - Universal Time
UTC - Universal Time Coordinated
VDOP - Vertical Dilution of Precision
VHSIC - Very High Speed Integrated Circuit
VLSIC - Very Large Scale Integrated Circuit
VOR - Very High Frequency (VHF) Omnidirectional Range
WGS-84 - World Geodetic System - 1984
YPG - Yuma Proving Ground
1 PPM - 1 Pulse Per Minute
1 PPS - 1 Pulse Per Second
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