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$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
Message ID
Number of messages
Message number
Satellites in view
Satellite ID
Elevation
Azimuth
SNR (C/N
)
0
Satellite ID
Elevation
Azimuth
SNR (C/N
)
0
Satellite ID
Elevation
Azimuth
SNR (C/N
)
0
Satellite ID
Elevation
Azimuth
SNR (C/N
)
0
Checksum
<CR> <LF>
(1) Depending on the number of satellites tracked multiple messages of GSV data may be required.
Example
$GPGSV
(1)
2
1
07
07
79
048
42
02
51
062
43
26
36
256
42
27
27
138
42
*71
Unit
Notes
GSA protocol header.
Number of messages, maximum 3.
Sequence number, range 1 to 3.
Number of satellites currently in view.
Channel 1, ID range 1 to 32.
degree
Elevation of satellite, maximum 90.
degree
Azimuth of satellite, range 0 to 359.
dBHz
Range 0 to 99, null when not tracking.
Channel 2, ID range 1 to 32.
degree
Elevation of satellite, maximum 90.
degree
Azimuth of satellite, range 0 to 359.
dBHz
Range 0 to 99, null when not tracking.
Channel 3, ID range 1 to 32.
degree
Elevation of satellite, maximum 90.
degree
Azimuth of satellite, range 0 to 359.
dBHz
Range 0 to 99, null when not tracking.
Channel 4, ID range 1 to 32.
degree
Elevation of satellite, maximum 90.
degree
Azimuth of satellite, range 0 to 359.
dBHz
Range 0 to 99, null when not tracking.
Message terminator.
17
T-368 User's Guide v1.0
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