Bagama SG-288 User Manual - page 15
SG-288 Manual V1.1
Dagama Confidential
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SG-288 Manual V1.1
14
$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:
(1) Depending on the number of satellites tracked multiple messages of GSV data may be required.
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
Message terminator.