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RYS8830 RYS8833
`GNSS Module Software Guide
4.
GSA: GNSS DOP and Active Satellites
When the combined satellite systems are used for positioning, the sentences from each satellite system
are output one by one (Talker ID of each sentences are “GN”). The
information of QZS is also output on
the line of GPS (SVIDs are over 193).
Format:$--GSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,x.x,x.x,x.x*hh<CR><LF>
Field
Format
Description
Header
$
Talker ID
--
GP : Using only GPS for positioning
GL : Using only GLONASS for
positioning
QZ : Using only QZS for positioning
GN : Using combined satellite systems
for positioning
Sentence ID
GSA
2D / 3D Mode
a
A : Automatically switch 2D / 3D
Mode
x
1 : Fix not available, 2 : 2D, 3 : 3D
Used satellite #1
xx
.
.
.
Used satellite #12
xx
PDOP
x.x
HDOP
x.x
VDOP
x.x
Checksum
*hh
Termination
<CR><LF>