User manual

USB Dongle Series Model:UD-731R

UniTraQ International Corp. RoHS compliance.

2010,08, Version 1.0

10.1 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,x.x,M,x.x,xxxx*hh<CR><LF>

1 2 3 4 5 6 7 8 9 10 11 12 13

Example:

$GPGGA,060932.448,2447.0959,N,12100.5204,E,1,08,1.1,108.7,M,,,,0000*0E<CR><LF>

Field Name Example Description

1 UTC Time 060932.448 UTC of position in hhmmss.sss format, (000000.00 ~

235959.99)

2 Latitude 2447.0959 Latitude in ddmm.mmmm format ddmm.mmmm

Leading zeros transmitted

3 N/S Indicator N Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South

4 Longitude 12100.5204 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