Gotop GT-1612-MTBD, Руководство пользователя

Страница: 33 / 35

GT-1612-MTBD
GPS&Beidou Receiver Module
www.gotop-zzu.com Page 33 of 35 Revision: V2.0.1-January 2015
Table 20-2: Mode 2
Value Description
M Manual-forced to operate in 2D or 3D mode
A Automatic-allowed to automatically switch 2D/3D
8.2.4 GSV-GNSS Satellites in View
$xxGSV , 2, 1, 07, 07, 79,048, 42, 02, 51,062, 43, 26, 36,256, 42, 27, 27, 138,42*71
$xxGSV, 2, 2, 07, 09, 23,313, 42, 04, 19, 159, 41, 15,12,041, 42*41.
Table 21: GSV Data Format
Name Example Units Description
Message ID $xxGSV GSV protocol header
Number of Message 2 Range 1 to 3
Message Number 1 Range 1 to 3
Satellites in View 07
Satellite ID 07 Channel 1(Range 1 to 66)
Elevation 79 degrees Channel 1(Maximum 90)
Azinmuth 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 66)
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
Check sum *71
<CR> <LF> End of message termination

Depending on the number of satellites tracked multiple messages of GSV data may be required.
8.2.5 RMC-Recommended Minimum Specific GNSS Data
$xxRMC, 161229.487, A, 3723.2475, N, 12158.3416, W, 0.13,309.62, 120598,, *10
Table 22: RMC Data Format
Name Example Units Description
Message ID $xxRMC RMC protocol header
UTS Position 161229.487 hhmmss.sss
Status A A=data valid or V=data not valid
Latitude 3723.2475 ddmm.mmmm