Sierra Wireless AirPrime XS1110 Product Technical Specification page 23

Table 3-7: GSA Data Format for NMEA v4.10
Name
Header
Talked ID
Message ID
Mode 1
Mode 2
Satellite Used
Satellite Used
Satellite Used
PDOP
HDOP
VDOP
System ID
Checksum
<CR> <LF>
Rev 4.0 Jul.20
GSA—GNSS DOP and Active Satellites,
Including GPS (GPGSA), GPS, and
GLONASS (GNGSA)
Table 3-7 explains the sentence below.
GPS satellite:
$GPGSA,A,3,01,03,06,09,11,12,17,19,23,28,,,1.6,0.9,1.2,1*29
GPS and GLONASS satellites:
$GNGSA,A,3,02,05,15,20,21,24,29,30,,,,,1.5,0.8,1.3,1*33
$GNGSA,A,3,67,76,77,83,,,,,,,,,1.5,0.8,1.3,2*37
Example
$
GP
GSA
A
3
01
03
1.6
0.9
1.2
1
*29
Units Description
GP: Using only GPS for positioning
GL: Using only GLONASS for positioning
GA: Using only Galileo for positioning
BD: Using only BeiDou for positioning
GQ: Using only QZSS for positioning
GN: Using combined satellite systems for positioning
A: Automatically switch 2D / 3D
See Table 3-8
1: Fix not available, 2: 2D, 3: 3D
See Table 3-9
SV on Channel 1, see
SV on Channel 2, see
SV on Channel 12
Position dilution of precision
Horizontal dilution of precision
Vertical dilution of precision
See Table 3-11
End of message termination
23
Protocols
Table 3-10
Table 3-10
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