Novatel OM-20000041 用户手册
D
Logs summary
MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1
163
GPGSA
GPS DOP and Active Satellites
GPS
receiver operating mode, satellites used for navigation and
DOP
values.
Structure:
Example:
$GPGSA,M,3,18,03,13,25,16,24,12,20,,,,,1.5,0.9,1.2*3F[CR][LF]
$GPGSA
mode MA
mode 123
prn
prn
prn
prn
prn
prn
prn
prn
prn
prn
prn
prn
pdop
hdop
vdop
*xx
[CR][LF]
Field
Structure
Field Description
Symbol
Example
1
$GPGSA
Log header
$GPGSA
2
mode MA
A = Automatic 2D/3D (not used by GPSCard) M = Manual, forced to
operate in 2D or 3D
operate in 2D or 3D
M
M
3
mode 123
Mode: 1 = Fix not available; 2 = 2D; 3 = 3D
x
3
4 - 15
prn
PRN numbers of satellites used in solution (null for unused fields), total
of 12 fields
of 12 fields
xx,xx,.....
18,03,13,25,16,
24,12,20,,,,
24,12,20,,,,
16
pdop
Position dilution of precision
x.x
1.5
17
hdop
Horizontal position and time dilution of precision
x.x
0.9
18
vdop
Vertical dilution of precision
x.x
1.2
19
*xx
Checksum
*hh
*3F
20
[CR][LF]
Sentence terminator
[CR][LF]