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15
4.1.4 GSA – GNSS DOP and Active Satellites
Purpose
Output operating mode, satellites used for navigation, and DOP values.
Format
$GPGSA,x,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx.x,xx.x,xx.x*CS
Example
$GPGSA,A,3,27,31,08,20,13,28,03,01,02,11,22,,01.3,00.8,01.0*0C
Output Rate
Programmable using EverMore Binary Message 0x8E and 0x8F.
Field Name Example Unit Description
1
Message ID $GPGSA GSA protocol header
2
Manual or
Automatic Mode
A x
A=automatic, allowed to switch 2D/3D automatically
M=manual, forced to operate in 2D or 3D mode
3
Navigation
Solution Mode
3 x
1=fix unavailable
2=2D
3=3D
4
ID Numbers of the
Satellites Used In
Solution
27,31,08,20,
13,28,03,01,
02,11,22
xx
SV ID of the satellites used for navigation
Null for unused channels.
Leading zeros transmitted
5
PDOP 01.3 xx.x
Leading zeros transmitted
6
HDOP 00.8 xx.x
Leading zeros transmitted
7
VDOP 01.0 xx.x
Leading zeros transmitted
8
Checksum *0C