NaviSys Technology - Your Location Partner
User’s Manual - GR-312
19
3.4 GPGSA - GNSS DOP and Active Satellites
Example
$GPGSA,A,3,05,02,26,27,09,04,15, , , , , ,1.8,1.0,1.5*11
Explanation
Contents
Example
Explanation
Message ID
$GPGSA GSA protocol header
Mode 1
A
M: Manual—forced to operate in 2D or 3D mode
A: 2D Automatic—allowed to automatically switch 2D/3D
Mode 2
3
1: Fix not available
2: 2D (< 4 Satellites used)
3: 3D (> 3 Satellite s used)
Satellite used in solution 05
Satellite on Channel 1
Satellite used in solution 02
Satellite on Channel 2
…
Display of quantity used (12 max)
PDOP
1.8
Position Dilution of Precision
HDOP
1.0
Horizontal Dilution of Precision
VDOP
1.5
Vertical Dilution of Precision
checksum
*11
<CR><LF>
End of sentence
3.5 GPGSV - GNSS Satellites in View
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
Explanation
Contents
Example
Unit
Explanation
Message ID
$GPGSV
GSV protocol header
Number of messages
2
Range 1 to 3
Message number
1
Range 1 to 3
Satellites in view
07
Number of satellites visible from receiver
Satellite ID number
07
Channel 1 (Range 1 to 32)
Elevation
79
degrees Elevation angle of satellite as seen from
receiver channel 1 (00 to 90)
Azimuth
048
degrees Satellite azimuth as seen from receiver
channel 1 (000 to 359)
SNR (C/No)
42
dBHz
Received signal level C/No from receiver
channel 1 (00 to 99, null when not tracking)
…
Satellite ID number
27
Channel 4 (Range 1 to 32)
Elevation
27
degrees Elevation angle of satellite as seen from
receiver channel 4 (00 to 90)
Azimuth
138
degrees Satellite azimuth as seen from receiver
channel 4 (000 to 359)
SNR (C/No)
42
dBHz
Received signal level C/No from receiver
channel 4 (00 to 99, null when not tracking)
checksum
*71
<CR><LF>
End of sentence
