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GNS - GNSS fix data
Fix data for single or combined satellite navigation systems (GNSS).
$--GNS,hhmmss.ss,llll.lll,a,yyyyy.yyy,a,c--c,xx,x.x,x.x,x.x,x.x,x.x*hh<CR><LF>
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | | +------ 10
| | | | | | | | | | +---------- 9
| | | | | | | | | +-------------- 8
| | | | | | | | +------------------ 7
| | | | | | | +---------------------- 6
| | | | | | +------------------------- 5
| | | | | +------------------------------ 4
| | | +-------+--------------------------------- 3
| +---+--------------------------------------------- 2
+------------------------------------------------------------- 1
1. UTC of position
2. Latitude, N/S
3. Longitude, E/W
4. Mode indicator
5. Total number of satllite in use,00-99
6. HDOP
7. Antenna altitude, metres, re:mean-sea-level(geoid)
8. Geoidal separation
9. Age of differential data
10. Differential reference station ID
11. Checksum
HDG - Heading Magnetic
$--HDG,x.x,x.x,a,x.x,a*hh<CR><LF>
| | | | | |
| | | | | +--------- 4
| | | +--+----------- 3
| +----+----------------- 2
+------------------------ 1
1. Magnetic sensor heading, degrees
2. Magnetic deviation, degrees E/W
3. Magnetic variation, degrees E/W
4. Checksum
HDT - Heading True
$--HDT, x.x, T*hh<CR><LF>
$--HDT,x.x,T*hh<CR><LF>
| | |
| | +--------- 2
+----+----------- 1
1. Heading, degrees true
2. Checksum