RoyalTek Confidential
17
REB-1315LPX Operational Manual
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Table 3 Position Fix Indicators
Value
Description
0
Fix not available or invalid
1
GPS SPS Mode, fix valid
2
Differential GPS, SPS Mode, fix valid
3-5
Not Supported
6
Dead Reckoning Mode, fix valid
GSA-GNSS DOP and Active Satellites
Table 4 contains the values of the following example:
$GPGSA, A, 3, 07, 02, 26, 27, 09, 04, 15, , , , , , 1.8,1.0,1.5*33
Table 4 GSA Data Format
Name
Example Units
Description
Message ID
$GPGSA
GSA protocol header
Mode 1
A
See Table 5
Mode 2
3
See Table 6
ID of Satellite
Used
07
Sv on Channel 1
ID of Satellite
Used
02
Sv on Channel 2
….
….
ID of Satellite
Used
Sv on Channel 12
PDOP
1.8
Position Dilution of Precision
HDOP
1.0
Horizontal Dilution of Precision
VDOP
1.5
Vertical Dilution of Precision
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Table 5 Mode 1
Value
Description
M
Manual-forced to operate in 2D or 3D mode
A
Automatic-allowed to automatically switch 2D/3D
