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GSV – GNSS Satellites in View
This message indicates the observable satellites’ information, such as PRN numbers,
elevation, azimuth, SNR, and number of satellites in view.
$GPGSV,gsv1,gsv2,gsv3,((gsv4,gsv5,gsv6,gsv7)*n)*hh<CR><LF>
Parameters Descriptions Notes
gsv1 Total number of messages 1 ~ 9
gsv2 Message number 1 ~ 9
gsv3 Total number of satellites in view
gsv4 PRN number
gsv5 Elevation (degrees) 90
o
maximum
gsv6 Azimuth (degrees) 0
o
~ 360
o
gsv7 SNR (C/N
0
) 0 ~ 99 dB-Hz, null when not
tracking
hh Checksum hex number (2 – character)
<CR><LF> End of message
The message can carry at most four (gsv4,gsv5,gsv6,gsv7) sets of observable satellites.
For a less than four-set case, the message only transmits available sets and the rest of
them will not be output, i.e., the message doesn’t transmit empty fields.