Levave GPS-R35, Руководство пользователя

Страница: 12 / 19

GPS-R35 User Manual
Levave
www.levave.com
Page 12 of 17
GSA
―
GNSSDOP and Active Satellites
Table 1-6 contains the values for the following example:
$GPGSA,A,3, 07,02,26,27,09,04,15,,,,,,,,1.8,1.0,1.5*33
Table 1-6 GSA Data Format
Name Example Units Description
Message ID $GPGSA GSA protocol header
Mode 1 A See Table 1-7
Mode 2 3 See Table 1-8
Satellite Used
1 07 Sv on Channel 1
Satellite Used
1 02 Sv on Channel 2
…. ….
Satellite Used
1 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
Checksum *33
<CR><LF> End of message termination
1. Satellite used in solution
Table 1-7 Mode 1
Value Description
M Manual-forced to operate in 2D or 3D mode
A 2Dautomatic-allowed to automatically switch 2D/3D
Table 1-8 Mode 2
Value Description
1 Fix not Available
2 2D(<4SV’s used)
3 3D(>3SV’s used)