Rainbow Electronics GM862-GPS - Manual (Page 102)

GM862-GPS Software User Guide
1vv0300729 Rev. 5 - 05/07/07
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5.4.4 GSV - GNSS Satellites in View
This sentence reports the number of satellites (SV) in view, satellite ID numbers, elevation, azimuth
and SNR value.
There could be four satellites information per transmission so, if the number of satellites in view is
bigger, separated GSV sentences will be generated. The number of sentence in transmission and the
total to be transmitted is shown in the first 2 fields of the sentence.
Table G contains the values for 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 G: GSV Data Format
Name Example Units Description
Message ID $GPGSV GSV protocol header
Number of
Messages 2 Range 1 to 3
Message
Number1 1 Range 1 to 3
Satellites in View 07
Satellite ID 07 Channel 1 (Range 1 to 32)
Elevation 79 degrees
Azimuth 048 degrees
SNR (C/No) 42 dBHz
.... .... ....
Satellite ID 27 Channel 4 (Range 1 to 32)
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
Checksum *71
<CR> <LF> End of message termination