SG-288 Manual V1.1
Dagama Confidential
© All Rights Reserved
SG-288 Manual V1.1
11
$GPGGA
This message transfers global positioning system fix data.
Following is an example.
$GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,9.0,M, , , ,0000*18
The $GPGGA message structure is shown below:
(1)
Only apply to NMEA version 2.3 (and later) in this NMEA message description.
(2) SiRF does not support geoid corrections.
Values are WGS84 ellipsoid heights.
Field
Example
Unit
Notes
Message ID
$GPGGA
GGA protocol header.
UTC Time
161229.487
hhmmss.sss
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south.
Longitude
12158.3416
dddmm.mmmm
E/W indicator
W
E=east or W=west.
Position Fix Indictor
1
0: Fix not available or invalid.
1: GPS SPS mode, fix valid.
2: Differ. GPS, SPS mode, fix valid
3-5: Not supported.
6:
Dead Reckoning Mode, fix valid.
(1)
Satellites Used
07
Number of satellites used to calculate fix.
Range 0 to 12.
HDOP
1.0
Horizontal Dilution of Precision.
MSL Altitude
(2)
9.0
Meter
Altitude above mean seal level.
Units
M
Meter
M stands for “meters”.
Geoid Separation
(2)
Meter
Separation from Geoids can be blank.
Units
Meter
M stands for “meters”.
Age of Diff. Corr.
Second
Age in seconds.
Blank (Null) fields when
DGPS is not used.
Diff Ref. Station ID
0000
Checksum
*18
<CR> <LF>
Message terminator.
