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3
15
empty field
20
01
22
14
21
25
empty field
empty field
empty field
29
01.8
01.0
01.5
0F
Example:
Table 6.54 outlines the GLGSA response message.
$GLGSA
M
3
33
142
Table 6.53: Typical GPGSA Response Message (continued)
Item
3D mode
Satellite 15 used for position computation
No locked satellite in this channel or locked satellite not used in position
solution
Satellite 20 used
Satellite 1 used
Satellite 22 used
Satellite 14 used
Satellite 21 used
Satellite 25 used
No locked satellite in this channel or locked satellite not used in position
solution
No locked satellite in this channel or locked satellite not used in position
solution
No locked satellite in this channel or locked satellite not used in position
solution
Satellite 29 used
PDOP = 1.8
HDOP = 1.0
VDOP = 1.5
Message checksum in hexadecimal
$GLGSA,M,3,33,54,,,41,38,,,42,51,48,,01.8,01.0,01.5*A B
Table 6.54: Typical GLGSA Response Message
Item
Header
Manual mode
3D mode
Satellite 33 used for position computation
Significance
Significance
GG Surveyor GPS+GLONASS Reference Manual
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