GR-91
GPS Module series
THE PRO NAME IN GPS
HOLUX Technology, Inc.
No.1-1, Innovation Rd.1, Hsinchu Science Park, Hsinchu, Taiwan(R.O.C)
TEL: 886-3-6687000 FAX:886-3-6687111 E-mail:[email protected] http:www.holux.com.tw
15
5.1.4 GNSS DOP and Active Satellites (GSA)
Table 4-5 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 4-5 GSA Data Format
Name
Example
Units
Description
Message ID
$GPGSA
GSA protocol header
Mode 1
A
See Table 5-6
Mode 2
3
See Table 5-7
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 4-6 Mode 1
Value
Description
M
Manual—forced to operate in 2D or 3D mode
A
2DAutomatic—allowed to automatically switch 2D/3D
Table 4-7 Mode 2
Value
Description
1
Fix Not Available
2
2D
3
3D
