User guide

Part 6 – Commands for GPS-Enabled Devices Chapter 16 – Commands for GPS-Enabled Devices
Universal IP AT Commands Reference Guide (Document S000457H) 93
SUPPORTED MESSAGE LIST
The following NMEA messages are supported.
Sentence Descriptions
GGA Global Positioning System Fix Data
GLL Geographic Position – Latitude/Longitude
GSA GNSS DOP and Active Satellites
GSV GNS Satellites in View
RMC Recommended Minimum Specific GNSS Data
VTG Course Over Ground and Ground Speed
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>
1 2 3 4 5 6 7 8 9 10 11
Example:
$GPGGA,111636.932,2447.0949,N,12100.5223,E,1,11,0.8,118.2,M,,,,0000*02<CR><LF>
Field Name Example Description
1 UTC Time 1 111636.932 UTC of position in hhmmss.sss format, (000000.000 ~
235959.999)
2 Latitude 2447.0949 Latitude in ddmm.mmmm format
Leading zeros transmitted
3 N/S Indicator N Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
4 Longitude 12100.5223 Longitude in dddmm.mmmm format
Leading zeros transmitted
5 E/W Indicator E Longitude hemisphere indicator, 'E' = East, 'W' = West
6 GPS quality
indicator
1 GPS quality indicator
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
7 Satellites
Used
11 Number of satellites in use, (00 ~ 12)
8 HDOP 0.8 Horizontal dilution of precision, (00.0 ~ 99.9)
9 Altitude 108.2 Mean sea level (geoid), (-9999.9 ~ 17999.9)
10 DGPS
Station ID
0000 Differential reference station ID, 0000 ~ 1023
NULL when DGPS not used
11 Checksum 02