GPS
HOLUX
Product series
With HOLUX, You never lose the way!
6.3.1
Global Positioning System Fix Data (GGA)
Table 6-2 contains the values for the following example:
$GPGGA,161229.487,3723.2475,N,12158.3416,W,1,07,1.0,9.0,M, , , ,0000*18
Table 6-2 GGA Data Format
Name
Example Units
Description
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 Indicator
1
See Table 6-3
Satellites Used
07
Range 0 to 12
HDOP
1.0
Horizontal Dilution of Precision
MSL Altitude
(1)
9.0
Meters
Units M
Meters
Geoid Separation
(1)
Meters
Units M
Meters
Age of Diff. Corr.
second Null fields when DGPS is not used
Diff. Ref. Station ID
0000
Checksum *18
<CR> <LF>
End of message termination
(1). SiRF Technology Inc. does not support geoid corrections. Values are WGS84 ellipsoid heights.
Table 6-3 Position Fix Indicator
Value Description
0
0 Fix not available or invalid
1
GPS SPS Mode, fix valid
2
Differential GPS, SPS Mode, fix valid
3
GPS PPS Mode, fix valid
HOLUX Technology, Inc.
1F, No.30, R&D Rd. II, Hsin-Chu City 300, Science-based Industrial Park, Taiwan
TEL: 886-3-5526268 FAX:886-3-5526108 E-mail:[email protected] Website:www.holux.com.tw
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