Multitech MTCMR-E1 Bedienungsanleitung Seite 103

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Part 6 AT Commands for GPS-Enabled Device
Universal IP AT Commands Reference Guide 103
NMEA MESSAGES
The full descriptions of supported NMEA messages are provided at the following paragraphs.
GGA Global Positioning System Fix Data
Time, position and fix related data for a GPS receiver.
Structure: $GPGGA,hhmmss.sss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,x.x,x.x,M,,,,xxxx*hh<CR><LF>
Example: $GPGGA,111636.932,2447.0949,N,12100.5223,E,1,11,0.8,118.2,M,,,,0000*02<CR><LF>
Name
Example
Description
Message ID
$GPGGA
GGA Protocol Header
UTC Time
111636.932
UTC of position in hhmmss.sss format, (000000.000 ~ 235959.999)
Latitude
2447.0949
Latitude in ddmm.mmmm format
N/S Indicator
N
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
Longitude
12100.5223
Longitude in dddmm.mmmm format
E/W Indicator
E
Longitude hemisphere indicator, 'E' = East, 'W' = West
GPS quality indicator
1
0: position fix unavailable
1: valid position fix, SPS mode
2: valid position fix, differential GPS mode
3: GPS PPS Mode, fix valid
4: Real Time Kinematic. System used in RTK mode with fixed integers
5: Float RTK. Satellite system used in RTK mode. Floating integers
6: Estimated (dead reckoning) Mode
7: Manual Input Mode
8: Simulator Mode
Satellites Used
11
Number of satellites in use, (00 ~ 12)
HDOP
0.8
Horizontal dilution of precision, (00.0 ~ 1023)
Altitude
118.2
Antenna Altitude above/below mean sea level (geoid), (-9999.9 ~ 17999.9)
Units
M
Unit of antenna altitude (meters)
Null
,,
Field not available on GPS cards
Null
,,
Field not available on GPS cards
DGPS Station ID
0000
Differential reference station ID, 0000 ~ 1023 (NULL when DGPS not used)
Checksum
02
<CR><LF>
<CR><LF>
End of message (termination)
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