UNICORECOMM Unicore, Справочник по командам

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Command and Log Reference
36
ID Field Description Symbol Example
between the geoid and the WGS84
ellipsoid
13 u-units Units of undulation(M = meter) M M
14 age
Age of differential correction data,
seconds
xx
This value is set to
00
when no
correction data
available
15 stn ID
Differential base station ID, between
0000 and 1023
xxxx
This value is set to
00
when no
correction data
available
16 *xx Checksum *hh *3F
17 [CR][LF] Sentence terminator [CR][LF]
6.1.7 GPGSA GPS DOP and Active Satellites
This command is used to log receiver operating mode, satellites in use and DOP
values.
Recommend Input:
Output 1Hz GPGSA message from current serial port:
GPGSA 1
Output 1Hz GPGSA message from com2:
GPGSA COM2 1
LOG output:
$GPGSA,M,3,22,25,12,14,18,09,31,,,,,,1.7,0.9,1.4*37
Table 6-8: GPGSA Message Description
ID Field Description Symbol Example
1 $GPGSA Log header $GPGSA
2 mode MA
A = Automatic mode, 2D/3D
M = Manual input mode, fixed 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 in use
(unused fields is null), contains 12
fields;
GPS = 1 to 32
xx,xx,.....
18,03,13, 25,16,
24,12, 20,,,,