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Document Title: iii
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.
Table of Contents
Document Change Record...................................................................................................... ii
Table of Contents.................................................................................................................... iii
Scope and Applicability .......................................................................................................... 1
Acronyms and Abbreviations................................................................................................. 2
1. Introduction......................................................................................................................... 3
1.1 GPS Orion Receiver .................................................................................................... 3
1.2 Functional Overview .................................................................................................... 3
1.3 Receiver Versions........................................................................................................ 4
2. Receiver Hardware............................................................................................................. 5
2.1 Main Board................................................................................................................... 5
2.2 Interface Board............................................................................................................. 7
2.3 Antenna........................................................................................................................ 7
3. Operations Guide ............................................................................................................... 8
3.1 Basic Receiver Handling.............................................................................................. 8
3.1.1 Hardware Setup ............................................................................................... 8
3.1.2 Precautions....................................................................................................... 8
3.1.3 Serial Communication...................................................................................... 8
3.1.4 Start-Up and Initialization................................................................................. 9
3.1.5 Output Selection............................................................................................. 10
3.1.6 Pulse-per-Second Signal ............................................................................... 11
3.1.7 Troubleshooting.............................................................................................. 11
3.2 Special Applications................................................................................................... 12
3.2.1 Aiding for Ballistic Trajectories....................................................................... 12
3.2.2 Lift-off Signal .................................................................................................. 13
3.2.3 IIP Prediction .................................................................................................. 13
3.2.4 Aiding for LEO Satellites ................................................................................ 15
3.2.5 Relative Navigation ........................................................................................ 16
3.2.6 External LNA Power Supply........................................................................... 17
4. Command and Output Message Reference .................................................................. 18
4.1 Overview .................................................................................................................... 18
4.2 Protocol Description................................................................................................... 20
4.2.1 WinMon Format.............................................................................................. 20
4.2.2 NMEA Format................................................................................................. 21
4.3 Commands................................................................................................................. 22
4.3.1 Basic Receiver Configuration......................................................................... 23
4.3.1.1 UR – Update Rate..........................................................................................................................23
4.3.1.2 DR – Data Rate...............................................................................................................................24
4.3.1.3 SM – Sentence Mode.....................................................................................................................24
4.3.1.4 MC – Media Correction..................................................................................................................25
4.3.2 Status Queries................................................................................................ 26
4.3.2.1 TA – Transmit Almanac.................................................................................................................26
4.3.2.2 TE – Transmit Ephemeris..............................................................................................................26
4.3.3 Initialization..................................................................................................... 27
4.3.3.1 PV – Position-Velocity....................................................................................................................27
4.3.3.2 DW – Doppler Window...................................................................................................................28
4.3.4 Reference Trajectory Aiding .......................................................................... 29
4.3.4.1 AM – Aiding Mode..........................................................................................................................29
4.3.4.2 RM – Run Mode..............................................................................................................................29