NMEA-0183 message: GSV
Satellite information
The GSV message string identifies the number of SVs in view, the PRN numbers, elevations, azimuths, and SNR values. An example of the GSV message string is:
$GPGSV,4,1,13,02,02,213,,03,-3,000,,11,00,121,,14,13,172,05*67
GSV message fields
| Field | Meaning |
|---|---|
| 0 | Message ID $GPGSV |
| 1 | Total number of messages of this type in this cycle |
| 2 | Message number |
| 3 | Total number of SVs visible |
| 4 | SV PRN number |
| 5 | Elevation, in degrees, 90° maximum |
| 6 | Azimuth, degrees from True North, 000° through 359° |
| 7 | SNR, 00 through 99 dB (null when not tracking) |
| 8–11 | Information about second SV, same format as fields 4 through 7 |
| 12–15 | Information about third SV, same format as fields 4 through 7 |
| 16–19 | Information about fourth SV, same format as fields 4 through 7 |
| 20 | The checksum data, always begins with * |