ProGin T-368, User Manual, Page: 18 / 24

$GPGSV
This message transfers information about satellites in view. The $GPGSV message structure is shown
below. Each record contains the information for up to 4 channels, allowing up to 12 satellites in view.
In the final record of the sequence the unused channel fields are left blank with commas to indicate that
a field has been omitted. Following is an 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
The $GPGSV message structure is shown below:
Field Example Unit Notes
Message ID $GPGSV GSA protocol header.
Number of messages
(1)
2 Number of messages, maximum 3.
Message number 1 Sequence number, range 1 to 3.
Satellites in view 07 Number of satellites currently in view.
Satellite ID 07 Channel 1, ID range 1 to 32.
Elevation 79 degree Elevation of satellite, maximum 90.
Azimuth 048 degree Azimuth of satellite, range 0 to 359.
SNR (C/N
0
) 42 dBHz Range 0 to 99, null when not tracking.
Satellite ID 02 Channel 2, ID range 1 to 32.
Elevation 51 degree Elevation of satellite, maximum 90.
Azimuth 062 degree Azimuth of satellite, range 0 to 359.
SNR (C/N
0
) 43 dBHz Range 0 to 99, null when not tracking.
Satellite ID 26 Channel 3, ID range 1 to 32.
Elevation 36 degree Elevation of satellite, maximum 90.
Azimuth 256 degree Azimuth of satellite, range 0 to 359.
SNR (C/N
0
) 42 dBHz Range 0 to 99, null when not tracking.
Satellite ID 27 Channel 4, ID range 1 to 32.
Elevation 27 degree Elevation of satellite, maximum 90.
Azimuth 138 degree Azimuth of satellite, range 0 to 359.
SNR (C/N
0
) 42 dBHz Range 0 to 99, null when not tracking.
Checksum *71
<CR> <LF> Message terminator.
(1) Depending on the number of satellites tracked multiple messages of GSV data may be required.
T-368 User’s Guide v1.0
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