GPS01 Datasheet, PDF (7/13 Pages) –

GPS01
NMEA Messages
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 3.01” The standard may be
obtained from NMEA, www.nmea.org
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
567 8 9
10 11
Example:
$GPGGA,111636.932,2447.0949,N,12100.5223,E,1,11,0.8,118.2,M,,,,0000*02<CR><LF>
Field Name
1
UTC Time
2
Latitude
3
N/S Indicator
4
Longitude
5
E/W Indicator
6
GPS quality
indicator
7
Satellites Used
8
HDOP
9
Altitude
10 DGPS Station ID
11 Checksum
Example
111636.932
2447.0949
N
12100.5223
E
1
11
0.8
108.2
0000
02
Description
UTC of position in hhmmss.sss format, (000000.000 ~
235959.999)
Latitude in ddmm.mmmm format
Leading zeros transmitted
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
Longitude in dddmm.mmmm format
Leading zeros transmitted
Longitude hemisphere indicator, 'E' = East, 'W' = West
GPS quality indicator
0: position fix unavailable
1: valid position fix, SPS mode
2: valid position fix, differential GPS mode
3: GPS PPS Mode, fix valid
4: Real Time Kinematic. System used in RTK mode with
fixed integers
5: Float RTK. Satellite system used in RTK mode. Floating
integers
6: Estimated (dead reckoning) Mode
7: Manual Input Mode
8: Simulator Mode
Number of satellites in use, (00 ~ 12)
Horizontal dilution of precision, (00.0 ~ 99.9)
mean sea level (geoid), (-9999.9 ~ 17999.9)
Differential reference station ID, 0000 ~ 1023
NULL when DGPS not used
Note: The checksum field starts with a ‘*’ and consists of 2 characters representing a hex number. The
checksum is the exclusive OR of all characters between ‘$’ and ‘*’.
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com