User Manual

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8
3.1.4 GSV-GNSS Satallites in View
Table 5 contains the values of the following example:
$GPGSV, 2, 1, 07, 07, 79, 048, 42, 02, 51, 062, 43, 26, 36, 256, 42, 27, 27,138, 42*71
$GPGSV, 2, 2, 07, 09, 23, 313, 42, 04, 19, 159, 41, 15, 12, 041, 42*41
Table 5 GGA Data Format
Name
Example
Units
Description
Message ID
$GPGSV
GSV protocol header
Number of
Messages
1
2
Range 1 to 3
Messages Number
1
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 ( Ture,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 )
Azimuth
27
degrees
Channel 4 ( Maximum 90 )
Elevation
138
degrees
Channel 4 ( Ture,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
1
Depending on the number of satellites tracked multiple messages of GSV data may be required.
3.1.5 RMC-Recommended Minimum Specific GNSS Data
Table 6 contains the values of the following example:
$GPRMC, 161229.487, A, 3723.24756, N, 12158.34162, W, 0.13, 309.62, 120598, ,*10
Table 6 GGA Data Format
Name
Example
Units
Description
Message ID
$GPRMC
RMC protocol header
UTC Position
161229.487
hhmmss.sss