NMEA 0183
,GPS 㳿 , . , ,
, SiRF Binary. NMEA 0183, (National Marine Electronics Association). NMEA 0183 - .
NMEA 0183
$.
5- . - , - , NMEA 0183 ..
(, ), . - , ( ,,). .
*.
2- - XOR- $ *.
<CR><LF> ( )
NMEA 2.1
$ GPGGA GPS , , , , HDOP ( ),
$ GPGLL GPS , .
$ GPGSA GPS , , , $ GPGGA .
$ GPGSV , , , , /
$ GPRMC RMC , , , GPS . ' , 2
$ GPVTG VTG (COG) (SOG).
$ GPZDA ZDA UTC, , , .
GGA - GPS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
$GPGGA, hhmmss.ss, 1111.11, a, yyyyy.yy, a, x, xx, x.x, xxx, M, x.x, M, x.x, xxxx*hh
1.
2.
3. ϳ / ϳ (N / S).
4.
5. / (E / W).
6. GPS :
0 = ;
1 = GPS , ;
2 = GPS , , ;
3 = GPS , .
7. ʳ (00-12, ).
8. (HDOP).
9.
10. , .
11. - WGS-84 (), "-" = .
12. , .
13. ³ GPS
|
|
|
14. , , ID, 0000-1023.
15. .
GLL - - /
1 2 3 4 5 6 7
$ GPGLL, 1111.11, a, yyyyy.yy, a, hhmmss.ss, A * hh <CR> <LF>
1.
2. ϳ / ϳ (N / S).
3.
4. / (E / W).
5. .
6.
A =
V =
7. .
