22
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 xx
gsv4
PRN number
xx
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.
