|
1PPS |
One Pulse Per Second |
|
|
2-D or 2D |
Two Dimensional |
|
|
3-D or 3D |
Three Dimensional |
|
|
|
|
|
|
AC |
Alternating Current |
|
|
A/D |
Analog-to-Digital |
|
|
ADC |
Analog-to-Digital Convertor |
|
|
ADR |
Accumulated Doppler Range |
|
|
ADR |
Accumulated Delta Range |
|
|
AGC |
Automatic Gain Control |
|
|
AK |
Authentication Key |
|
|
AL |
Alarm Limit |
|
|
AltBOC |
Alternate Binary Offset Carrier |
|
|
AMSAT |
American Satellite |
|
|
APC |
Aircraft Power Conditioner |
|
|
ARNS |
Aeronautical Radio Navigation Services |
|
|
ARP |
Antenna Reference Point |
|
|
AS |
Anti-Spoofing |
|
|
ASCII |
American Standard Code for Information Interchange |
|
|
ASIC |
Application Specific Integrated Circuits |
|
|
AVL |
Automated Vehicle Locations |
|
|
|
|
|
|
BCD |
Binary Code Decimal |
|
|
BDE |
Borland Database Engine |
|
|
BDS |
Black Diamond System |
|
|
BFS |
Broadband Fiber Source |
|
|
BIH |
Bureau l'International de l'Heure |
|
|
BIST |
Built-In Self-Test |
|
|
BIT |
Built-In Test |
|
|
BNR |
Binary Numerical Representation |
|
|
BOC |
Binary Offset Carrier |
|
|
BPS |
Bits per Second |
|
|
BPSK |
Bi-Phase Shift Key |
|
|
BSG |
Baseband Signal Generator |
|
|
BTS |
Conventional Terrestrial System (BIH defined) |
|
|
BW |
Bandwidth |
|
|
|
|
|
|
C/A Code |
Coarse/Acquisition Code |
|
|
CAN |
Controller Area Network |
|
|
CASM |
Coherent Adaptive Subcarrier Modulation |
|
|
CBIT |
Continuous Built In Test |
|
|
cc |
Cubic Centimeters |
|
|
CCITT |
Command, Control, and Intelligence Technical Test |
|
|
CD |
Clock Drift |
|
|
CD |
Compact Disc |
|
|
cd |
Change Directory |
|
|
CDGPS |
Canada-Wide Differential Global Positioning System |
|
|
CDMA |
Code Division Multiple Access |
|
|
CDPD |
Cellular Digital Packet Data |
|
|
CDU |
Control and Display Unit |
|
|
CE |
Conformité Européenna |
|
|
CEP |
Circular Error Probable |
|
|
CF |
Compact Flash |
|
|
CFGP |
Configuration Parameters |
|
|
CISPR |
International Special Committee On Radio Interference |
|
|
CKSC |
Clock/Status Card |
|
|
CL |
Long Code |
|
|
CLK |
System Clock |
|
|
CM |
Moderate Length Code |
|
|
CMG |
Course Made Good |
|
|
CMP |
Comparator Message Processor |
|
|
CMR |
Compact Measurement Record |
|
|
C/No |
Post Correlation Carrier to Noise Ratio in dB-Hz |
|
|
CoCom |
Coordinating Committee on Multilateral Export Controls |
|
|
COG |
Course Over Ground |
|
|
COGO |
Coordinate Geometry |
|
|
COSPAS |
Cosmitscheskaja Sistema Poiska Awarinitsch Sudow (Russian: space system for search of vessels in distress) |
|
|
CPLD |
Complex Programmable Logic Device |
|
|
CPU |
Central Processing Unit |
|
|
CR |
Carriage Return |
|
|
CRC |
Cyclic Redundancy Check |
|
|
CRR |
Common Reference Receiver |
|
|
CS |
Commercial Service |
|
|
CSIC |
Coordination Scientific Information Center |
|
|
CSA |
Canada Shipping Act |
|
|
CTP |
Conventional Terrestrial Pole |
|
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CTS |
Clear To Send |
|
|
CTS |
Conventional Terrestrial System or Clear To Send |
|
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CW |
Continuous Wave |
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dB |
Decibel |
|
|
dBm |
Decibel Relative to 1 milliWatt |
|
|
DC |
Direct Current |
|
|
DCD |
Data Carrier Detected |
|
|
DCE |
Data Communications Equipment (Modem) |
|
|
DCO |
Digitally Controlled Oscillator |
|
|
DDS |
Direct Digitial Sampling |
|
|
DGNSS |
Differential Global Navigation Satellite System |
|
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DGPS |
Differential Global Positioning System |
|
|
DHCP |
Dynamic Host Configuration Protocol |
|
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DL |
Data Logger |
|
|
DLL |
Delay Lock Loop |
|
|
DoD |
Department of Defence (U.S.) |
|
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DOP |
Dilution Of Precision |
|
|
DPB |
Digital Pulse Blanking |
|
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DR |
Dead Reckoning |
|
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DRAM |
Dynamic Random Access Memory |
|
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DRMS |
Distance Root Mean Square |
|
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DSP |
Digital Signal Processor |
|
|
DSR |
Data Set Ready |
|
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DTE |
Data Terminal Equipment |
|
|
DTR |
Data Terminal Ready |
|
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D/U |
Desired/Undesired |
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e |
Eccentricity |
|
|
E-L |
Early to Late |
|
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ECEF |
Earth-Centred-Earth-Fixed |
|
|
EDM |
Electronic Distance Measuring (instrument) |
|
|
EEPROM |
Electrically Erasable Programmable Read Only Memory |
|
|
EGNOS |
European Geo-Stationary Navigation System |
|
|
EMC |
Electromagnetic Compatibility |
|
|
EMI |
Electromagnetic Immunity |
|
|
EP |
Engineering Practice |
|
|
ESA |
European Space Agency |
|
|
ESD |
Electrostatic Discharge |
|
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ESN |
Electronic Serial Number |
|
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|
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|
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FAA |
Federal Aviation Administration (FAA) |
|
|
FCC |
Federal Communication Commission |
|
|
FDA |
Frequency Distribution Amplifier |
|
|
FDMA |
Frequency Division Multiple Access |
|
|
FEC |
Forward Error Correction |
|
|
FEPROM |
Flash Erasable Programmable Read Only Memory |
|
|
FIFO |
First In, First Out |
|
|
FKP |
Flachen Korrectur Parameter (Plane Correction Parameter) German |
|
|
FLL |
Frequency Lock Loop |
|
|
FMEA |
Failure Mode Effects Analysis |
|
|
FOC |
Full Operational Capability |
|
|
FOG |
Fibre Optic Gyro |
|
|
FOM |
Figure of Merit |
|
|
FPGA |
Field-Programmable Gate Array |
|
|
FR |
Factory Reset |
|
|
FTP |
File Transfer Protocol |
|
|
FTS |
Frequency and Time Standard |
|
|
FW |
Firmware |
|
|
|
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|
|
GAGAN |
GPS Aided GEO Augmented Navigation (India) |
|
|
GaIn |
Galileo Industries |
|
|
GCC |
Galileo Control Centre |
|
|
GDOP |
Geometric Dilution Of Precision |
|
|
GEO |
Geostationary Satellite |
|
|
GIC |
GPS Integrity Channel |
|
|
GL |
GLONASS (NMEA talker ID) |
|
|
GLONASS |
Global Navigation Satellite System |
|
|
GM |
Gauss-Markov |
|
|
GMS |
Ground Mission Segment |
|
|
GMT |
Greenwich Mean Time |
|
|
GN |
Combined GPS and GLONASS (NMEA talker ID) |
|
|
GND |
Ground |
|
|
GNSS |
Global Navigation Satellite System |
|
|
G.P. |
Ground Plane |
|
|
GP |
GPS (NMEA talker ID) |
|
|
GPAI |
General Purpose Analog Input |
|
|
GPS |
Global Positioning System |
|
|
GRC |
Galileo Reception Chain |
|
|
GRCN |
Galileo Reception Chain Non-PRS |
|
|
GSS |
Galileo Sensor Stations |
|
|
GSTB |
Galileo System Test Bed |
|
|
GTR |
Galileo Test Receiver |
|
|
GTS |
Galileo Test Signal Generator |
|
|
GUI |
Graphical User Interface |
|
|
GUS |
Ground Uplink Station |
|
|
GUST |
WAAS GUS-Type 1 |
|
|
GUSTR |
WAAS GUS-Type 1 Receiver |
|
|
|
|
|
|
HDOP |
Horizontal Dilution Of Precision |
|
|
hex |
Hexadecimal |
|
|
HFOM |
Horizontal Figure of Merit |
|
|
HMAC |
Hashed Message Authentication Code |
|
|
HP |
High Performance (standard OmniSTAR service) |
|
|
HTDOP |
Horizontal position and Time Dilution Of Precision |
|
|
Hz |
Hertz |
|
|
|
|
|
|
I and Q |
In-Phase and Quadrature (Channels) |
|
|
I Channel |
In-phase data channel |
|
|
IBIT |
Initiated Built In Test |
|
|
IC |
Integrated Circuit |
|
|
ICAO |
International Civil Aviation Organization |
|
|
ICD |
Interface Control Document |
|
|
ICP |
Integrated Carrier Phase |
|
|
ID |
Identification |
|
|
IEC |
International Electrotechnical Commission |
|
|
IEEE |
Institute of Electrical & Electronics Engineers |
|
|
IERS |
International Earth Rotation Service |
|
|
IF |
Intermediate Frequency |
|
|
IGP |
Ionospheric Grid Point |
|
|
IGRF |
International Geometric Reference Field |
|
|
IGS CB |
International GPS Service Central Bureau |
|
|
IM |
Intermodulation |
|
|
IMLA |
Integrated Multipath Limiting Antenna |
|
|
IMO |
International Maritime Organization |
|
|
IMU |
Inertial Measuring Unit |
|
|
INH |
Inhibit |
|
|
INS |
Inertial Navigation System |
|
|
I/O |
Input/Output |
|
|
IODE |
Issue of Data (Ephemeris) |
|
|
IOV |
In-Orbit Validation |
|
|
IP |
Internet Protocol |
|
|
IRQ |
Interrupt Request |
|
|
ISG |
IF Signal Generator |
|
|
ISO |
International Standards Organization |
|
|
ITRF |
International Terrestrial Reference System |
|
|
|
|
|
|
JPL |
Jet Propulsion Laboratory (NASA) |
|
|
JTAG |
Joint Test Action Group |
|
|
|
|
|
|
KPA |
Klystron Power Amplifier |
|
|
Kb |
Kilobit |
|
|
KB |
Kilobyte |
|
|
KMF |
Key Management Facility |
|
|
|
|
|
|
L1 |
The 1575.42 MHz GPS carrier frequency including C/A and P Code |
|
|
L2 |
The 1227.60 MHz secondary GPS carrier frequency (P Code only) |
|
|
L2C |
The L2 civilian code transmitted at the L2 frequency (1227.6 MHz) |
|
|
L5 |
3rd civil GPS frequency that tracks at low signal-to-noise ratios (1176.45 MHz) |
|
|
LAAS |
Local Area Augmentation System |
|
|
LCD |
Liquid Crystal Display |
|
|
LED |
Light-Emitting Diode |
|
|
LF |
Line Feed |
|
|
LGF |
LAAS Ground Facility |
|
|
LHCP |
Left Hand Circular Polarization |
|
|
LME |
Line Maintenance Equipment |
|
|
LNA |
Low Noise Amplifier |
|
|
LO |
Local Oscillator |
|
|
LRU |
Line Replacement Unit |
|
|
LSB |
Least significant bit |
|
|
LVTTL |
Low Voltage Transistor Transistor Logic |
|
|
|
|
|
|
MAC |
Media Access Control (Ethernet) |
|
|
MAT |
Multipath Assessment Tool |
|
|
Mb |
Megabit |
|
|
MB |
Megabyte |
|
|
MEDLL® |
Multipath Estimation Delay Lock Loop |
|
|
MEO |
Medium Earth Orbit |
|
|
MET |
Multipath Elimination Technology |
|
|
MET |
Meteorological |
|
|
MGRS |
Military Grid Reference Systems |
|
|
MHz |
MegaHertz |
|
|
MIB |
Management Information Base |
|
|
MIL |
Military |
|
|
MINOS |
Multiple Independent NOmadic Stargazer |
|
|
MKI |
Mark Input |
|
|
MKMF |
Mission Key Management Facility |
|
|
MMCX |
Multimedia Communications Exchange (Lucent) |
|
|
MMT |
Multipath Mitigation Technology |
|
|
MOPS |
Minimum Operational Performance Standard |
|
|
MP |
Messag Processor |
|
|
MPC |
Modulated Precision Clock |
|
|
MPM |
Multipath Meter |
|
|
ms |
Millisecond |
|
|
MSAS |
MTSAT Satellite Based Augmentation System |
|
|
MSAT |
Mobile Satellite |
|
|
MSB |
Most significant bit |
|
|
MSL |
Mean sea level |
|
|
MSR |
Measure Output |
|
|
MTBF |
Mean Time Between Failures |
|
|
MTSAT |
Multi-Functional Transport Satellite |
|
|
|
|
|
|
N/A |
Not Applicable |
|
|
NAS |
National Airspace System (United States) |
|
|
NASA |
National Aeronautics and Space Administration (U.S.) |
|
|
NTS |
National Topographic Series (Canada) |
|
|
NAV |
RINEX Ephemeris File |
|
|
NAVSTAR |
NAVigation Satellite Timing And Ranging (synonymous with GPS) |
|
|
N/C or NC |
Not Connected |
|
|
NCC |
Network Control Center |
|
|
NCO |
Numerically Controlled Oscillator |
|
|
ND |
Navigation Data |
|
|
NH |
Neumann-Hoffman |
|
|
NMEA |
National Marine Electronics Association |
|
|
N. mi. |
Nautical mile |
|
|
NOC |
Network Operations Center |
|
|
ns |
Nanosecond |
|
|
NVM |
Non-Volatile Memory |
|
|
|
|
|
|
OBS |
RINEX Observation File |
|
|
OCXO |
Oven Controlled Crystal Oscillator |
|
|
OEM |
Original Equipment Manufacturer |
|
|
OP |
Operational Parameters |
|
|
OS |
Open Service |
|
|
|
|
|
|
PAC |
Pulsed Aperture Correlator |
|
|
PC |
Personal Computer |
|
|
PC |
Phase Centre |
|
|
P-Code |
Precise Code |
|
|
PBIT |
Power-Up Built-In Test |
|
|
PCB |
Printed Circuit Board |
|
|
PCMCIA |
Personal Computer Memory Card International Association |
|
|
PDC |
Power and Data Card |
|
|
|
Power Distribution Function |
|
|
|
Portable Document File |
|
|
PDOP |
Position Dilution Of Precision |
|
|
PE-90 |
Parameters of the Earth 1990 (see PZ90) |
|
|
PIN |
Position Indicator |
|
|
PLL |
Phase Lock Loop |
|
|
PPM |
Parts Per Million |
|
|
PPP |
Point to Point Protocol |
|
|
PPS |
Precise Positioning Service or Pulse Per Second |
|
|
PRN# |
PseudoRandom Noise number |
|
|
PRS |
Public Regulated Service |
|
|
PSN |
Part Serial Number |
|
|
PSR |
Pseudorange |
|
|
PV |
Position Valid |
|
|
PVT |
Position Velocity Time |
|
|
PZ90 |
Parametry Zemli 1990 (see PE-90) |
|
|
|
|
|
|
Q Channel |
Quadrature data-free channel |
|
|
|
|
|
|
RAM |
Random Access Memory |
|
|
RAS |
Remote Access Service |
|
|
RCC |
Rescue Co-ordination Centre |
|
|
RF |
Radio Frequency |
|
|
RFDC |
Radio Frequency Direct Current |
|
|
RFU |
Radio Frequency Uplink |
|
|
RHCP |
Right Hand Circular Polarization |
|
|
RI |
Ring Indicator |
|
|
RINEX |
Receiver Independent Exchange Format |
|
|
RLG |
Ring Laser Gyro |
|
|
RoHS |
Restriction of the use of Hazardous Substances |
|
|
RM |
Raw Measurements |
|
|
ROM |
Read Only Memory |
|
|
RMA |
Return Material Authorization |
|
|
RMS |
Root Mean Square |
|
|
RSS |
Residual Solution Status |
|
|
RTC |
Real-Time Clock |
|
|
RTCA |
Radio Technical Commission for Aviation Services |
|
|
RTCM |
Radio Technical Commission for Maritime Services |
|
|
RTCMV3 |
RTCM Version 3.0 |
|
|
RTK |
Real Time Kinematic |
|
|
RTS |
Request To Send |
|
|
RXD |
Received Data |
|
|
|
|
|
|
SA |
SMART ANTENNA |
|
|
SA |
Selective Availability |
|
|
SAE |
Society of Automotive Engineers |
|
|
SAR |
Search and Rescue |
|
|
SARSAT |
Search and Rescue Satellite Aided Tracking |
|
|
SBAS |
Satellite Based Augmentation System |
|
|
SC |
Safety Computer |
|
|
SCAT-I |
Special Category I |
|
|
SD |
Standard Deviation |
|
|
SEP |
Spherical Error Probable |
|
|
SG |
Signal Generator |
|
|
SGS-90 |
Soviet Geodetic System 1990 |
|
|
SI |
Système Internationale |
|
|
SigGen |
WAAS GUS Type-1 Signal Generator |
|
|
SiS |
Signal in Space |
|
|
SLIP |
Serial Line Internet Protocol |
|
|
SNAS |
Satellite Navigation Augmentation System (China) |
|
|
SNR |
Signal-to-Noise Ratio |
|
|
SOL |
Safety-of-Life |
|
|
SPS |
Standard Position Service |
|
|
sps |
Symbols Per Second |
|
|
SPAN™ |
Synchronized Position Attitude Navigation |
|
|
SQM |
Signal Quality Monitoring |
|
|
SRAM |
Static Random Access Memory |
|
|
SS II |
SUPERSTAR II |
|
|
SU |
(former) Soviet Union (now Russia) |
|
|
SV |
Space Vehicle |
|
|
SVID |
Space Vehicle Identifier |
|
|
SVN |
Space Vehicle Number |
|
|
SW |
Software |
|
|
SWRU |
Software Replacement Unit |
|
|
|
|
|
|
TCP |
Transmission Control Protocol |
|
|
TCXO |
Temperature Compensated Crystal Oscillator |
|
|
TDOP |
Time Dilution Of Precision |
|
|
TES |
Time Estimator Status |
|
|
TIL |
Time Integrity Limit |
|
|
TNM |
Telecommunications Network Management |
|
|
TOA |
Time of Almanac |
|
|
TOE |
Time of Ephemeris |
|
|
TOW |
Time of Week |
|
|
TRAIM |
Time Receiver Autonomous Integrity Monitor |
|
|
TTFF |
Time-To-First-Fix |
|
|
TTL |
Transistor-Transistor Logic |
|
|
TTNL |
Time to Narrow Lane |
|
|
TVS |
Transient Voltage Suppressor |
|
|
TXD |
Transmitted Data |
|
|
|
|
|
|
UART |
Universal Asynchronous Receiver Transmitter |
|
|
UDP |
User Datagram Protocol |
|
|
UDRE |
User Differential Range Error |
|
|
UHF |
Ultra High Frequency |
|
|
USB |
Universal Serial Bus |
|
|
USGS |
United States Geological Survey |
|
|
UTC |
Coordinated Universal Time |
|
|
UTC(SU) |
Coordinated Universal Time (former Soviet Union, now Russia |
|
|
|
|
|
|
V AC |
Volts Alternating Current |
|
|
V DC |
Volts Direct Current |
|
|
VARF |
Variable Frequency |
|
|
VBS |
Virtual Base Station (standard OmniSTAR service) |
|
|
VCTCXO |
Voltage Controlled Temperature Compensated Crystal Oscillator |
|
|
VDOP |
Vertical Dilution of Precision |
|
|
VFD |
Vacuum Fluorescent Display |
|
|
VFOM |
Vertical Figure of Merit |
|
|
VSWR |
Voltage Standing Wave Ratio |
|
|
|
|
|
|
WAAS |
Wide Area Augmentation System |
|
|
WAAS G-II |
WAAS Reference Receiver: G-II |
|
|
WADGPS |
Wide Area DGPS |
|
|
WEEE |
Waste Electrical and Electronic Equipment |
|
|
WGS |
World Geodetic System |
|
|
WHQL |
Windows Hardware Quality Lab (Microsoft) |
|
|
WMP |
WAAS Message Processor |
|
|
WNA |
Week number of almanac |
|
|
WPT |
Waypoint |
|
|
|
|
|
|
XP |
Extra Performance (standard OmniSTAR service) |
|
|
XTE |
Crosstrack Error |
|
|
|
|
|
|
ZUPT |
Zero Velocity Update |