USGlobalsat EM-318-02 User Manual
Page 10
EM-318-02
Specifications are subject to be changed without notice.
Page 10 of 16
Version 1.2.1
Table B-6 Mode1
Value
Description
M
Manual-forced to operate in 2D or 3D mode
A
2D automatic-allowed to automatically switch 2D/3D
Table B-7 Mode 2
Value
Description
1
Fix
Not
Available
2
2D
3
3D
GSV-GNSS Satellites in View
Table B-8 contains the values for the following 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
Table B-8 GSV Data Format
Name
Example Units
Description
Message ID
$GPGSV
GSV protocol header
Number of Messages
1
2
Range 1 to 3
Message Number
1
1
Range 1 to 3
Satellites in View
07
Satellite ID
07
Channel 1(Range 1 to 32)
Elevation
79
degrees
Channel 1(Maximum90)
Azimuth
048
degrees
Channel 1(True, Range 0 to 35
SNR(C/No)
42
dBHz
Range 0 to 99,null when not tra
…….
…….
Satellite ID
27
Channel 4 (Range 1 to 32)
Elevation
27
Degrees
Channel 4(Maximum90)
Azimuth
138
Degrees
Channel 4(True, Range 0 to 35
SNR(C/No)
42
dBHz
Range 0 to 99,null when not tra
Checksum
*71
End of message termination
Depending on the number of satellites tracked multiple messages of GSV data may be required.