Garmin 15H-W - GPS 기술 사양 - 페이지 4

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페이지 인쇄

4.2.12 Map Datum (PGRMM) ........................................................................................................................18

4.2.13 Sensor Status Information (PGRMT) ...................................................................................................19

4.2.14 3D velocity Information (PGRMV) .....................................................................................................19

4.2.15 DGPS Beacon Information (PGRMB) .................................................................................................19

4.3 Baud Rate Selection ........................................................................................................................20

4.4 One-Pulse-Per-Second (PPS) Output ..............................................................................................20

4.5 Received RTCM Data .....................................................................................................................20

Appendix A: Earth Datums ............................................................................................21

Appendix B: Binary Phase Output Format...................................................................24

Satellite Data Record .......................................................................................................................................24

Position Record ................................................................................................................................................26

Receiver Measurement Record ........................................................................................................................26

Sample C Code ................................................................................................................................................27

Appendix C: Changing the Baud Rate in Garmin Mode.............................................28

Appendix D: Ephemeris Data Download (Programming Example)...........................29

Synopsis ...........................................................................................................................................................29

Garmin Binary Format Review ........................................................................................................................29

Ephemeris Download Procedure ......................................................................................................................30

TX Packet: Ephemeris Data Request .......................................................................................................30

RX Packet: Acknowledgement ................................................................................................................30

RX Packet: Number of Data Packets to Expect........................................................................................30

TX Packet: Acknowledgement.................................................................................................................30

RX Packet: Ephemeris Data .....................................................................................................................31

TX Packet: Download Complete..............................................................................................................33

Appendix E: Declaration of Conformity........................................................................34

LIST OF TABLES AND FIGURES

Table 1: Gain vs. SNR for Given Noise Figure.............................................................................................. 7

Table 2: GPS 15H & 15L Wire Descriptions ................................................................................................. 8

Figure 1: Computer Serial Port Interconnection............................................................................................. 9

Figure 2: PDA Serial Port Interconnection..................................................................................................... 9

Figure 3: Basic NMEA Device Interconnection............................................................................................. 9

Figure 4: GPS 15H-F & 15L-F Dimensions................................................................................................. 10

Figure 5: GPS 15H-W & 15L-W Outline Drawing...................................................................................... 10

Table 3: NMEA 0183 Output Sentence Order and Size ............................................................................... 15

Table 4: Characters per Second for Available Baud Rates........................................................................... 15

190-00266-01

GPS 15H & 15L Technical Specifications

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