USB Dongle Series Model:UD-731N
UniTraQ International Corp.
RoHS compliance
.
2011,01, Version 1.1
15
10. APPROVED NMEA MESSAGE
The serial interface protocol is based on the National Marine Electronics Association’s NMEA
0183 ASCII interface specification. This standard is fully define in “NMEA 0183, Version 2.3”
The standard may be obtained from NMEA,
www.nmea.org
10.1 GGA – GLOBAL POSITIONING SYSTEM FIX DATA
Time, position and fix related data for a GPS receiver.
Structure:
$GPGGA,hhmmss.sss,ddmm.mmmmm,a,dddmm.mmmmm,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,060932.448,2447.09599,N,12100.52049,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
2447.09599
Latitude in ddmm.mmmmm format ddmm.mmmmm
Leading zeros transmitted
3
N/S Indicator
N
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
4
Longitude
12100.52049
Longitude in dddmm.mmmmm 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
