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Document Title: 2
User’s Manual for the GPS Orion-S/-HD Receiver
Document No. Issue 1.0
GTN-MAN-0110 June 22, 2003
DLR/GSOCNo part of this document shall be reproduced in any form or disclosed to third parties without prior authorization.
Acronyms and Abbreviations
A Ampere
AGC Automatic Gain Control
ASCII American Standard Code for Information Interchange
C/N
0
Carrier-to-Noise Ratio
COM Communication
dB Decibel
DC Direct current
DLR Deutsches Zentrum für Luft- und Raumfahrt
EPROM Erasable Programmable Read Only Memory
FLL Frequency-Locked Loop
GPS Global Positioning System
GSOC German Space Operations Center
I/F Intermediate Frequency
IIP Instantaneous Impact Point
IQ In-phase and Quadrature (correlator output)
L1 GPS frequency (1575.42 MHz)
LEO Low Earth Orbit
LNA Low noise amplifier
MITEL Company name
NMEA Nautical Marine Electronics Association
NVM Non-Volatile Memory
ORION Product name
PC Personal Computer
PLL Phase-Locked Loop
PPS Pulse-per-second
PRN Pseudorandom Noise
R/F Radio Frequency
RAM Random Access Memory
RX Receiver
SAW Surface Acoustic Wave
SMA Sub Miniature Assembly
SNR Signal-to-Noise Ratio
SV Space Vehicle
TC Telecommand
TCXO Temperature Controlled Oscillator
TM Telemetry
TTL Transistor-Transistor-Logic
TX Transmitter
UART Universal Asynchronous Receive and Transmit
V Volt
W Watt