Table 2-8 GSV Data Format
Name | Example | Units | Description |
|
|
|
|
Message ID | $GPGSV |
| GSV protocol header |
|
|
|
|
Number of | 2 |
| Range 1 to 3 |
Messages1 |
|
|
|
|
|
|
|
Messages Number1 | 1 |
| Range 1 to 3 |
|
|
|
|
Satellites in View | 07 |
|
|
|
|
|
|
Satellite ID | 07 |
| Channel 1(Range 1 to 32) |
|
|
|
|
Elevation | 79 | degrees | Channel 1(Maximum 90) |
|
|
|
|
Azimuth | 048 | degrees | Channel 1(True, Range 0 to 359) |
|
|
|
|
SNR (C/No) | 42 | dBHz | Range 0 to 99, null when not |
|
|
| tracking |
|
|
|
|
…. |
|
| …. |
|
|
|
|
Satellite ID | 27 |
| Channel 4(Range 1 to 32) |
|
|
|
|
Elevation | 27 | degrees | Channel 4(Maximum 90) |
|
|
|
|
Azimuth | 138 | degrees | Channel 4(True, Range 0 to 359) |
|
|
|
|
SNR (C/No) | 42 | dBHz | Range 0 to 99, null when not |
|
|
| tracking |
|
|
|
|
Checksum | *71 |
|
|
|
|
|
|
＜CR＞＜LF＞ |
|
| End of message termination |
|
|
|
|
1Depending on the number of satellites tracked multiple messages of GSV data may be required.
2.1.5 RMC-Recommended Minimum Specific GNSS Data
Table
$GPRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13, 309.62, 120598, ,*10
Table 2-9 RMC Data Format
Name | Example | Units | Description |
|
|
|
|
Message ID | $GPRMC |
| RMC protocol header |
|
|
|
|
UTC Position | 161229.487 |
| hhmmss.sss |
|
|
|
|
Status | A |
| A=data valid or V=data not valid |
|
|
|
|
Latitude | 3723.2475 |
| ddmm.mmmm |
|
|
|
|
N/S Indicator | N |
| N=north or S=south |
|
|
|
|
Longitude | 12158.3416 |
| dddmm.mmmm |
|
|
|
|
E/W Indicator | W |
| E=east or W=west |
|
|
|
|
Speed Over Ground | 0.13 | knots |
|
|
|
|
|
15
