What is the raw data FORMAT like?
All data coming from the GPS Logger is reported in the form of NMEA 0183 sentences.
Even though the format is text-based it operates on a low level, so values of data replies correspond to raw sensor values that usually aren't fit to be used in applications directly. See Processing Raw Data at http://spectran-developer.net/ftp/doc/G ... 140718.pdf for further information how to obtain usable values.
The GPS Logger implements the following 3 possible data formats:
–Reports date, time, GPS coordinates and estimated speed and course –Has 12 parameters, which may be empty/invalid on missing signal: 1.Time: Format is HHMMSS.ZZZ (ZZZ being milliseconds, but is always zero) 2.Status: A for ok, V for warnings 3.Latitude: Float value, see XXXX for details 4.Latitude orientation: N for north, S for south 5.Longitude: Float value, see XXXX for details 6.Lonitude orientation: W for west, E for east 7.Speed over ground: Float value as knots (estimated value based on GPS data) 8.Course: Float value as heading over ground relative to true north (estimated value based on GPS data) 9.Date: Format is DDMMYY (no century information) 10.Magnetic deviation: empty 11.Magnetic deviation orientation: empty 12.Signal integrity: A for valid signal, N for invalid or no signal –Example: $GPRMC,111529.000,A,5008.2031,N,00619.1924,E,0.33,346.82,120213,,,A*64<CR><LF>
–Reports time, GPS coordinates, elevation and details on satellite signal –Has 14 parameters, which may be empty/invalid on missing signal: 1.Time (see GPRMC) 2.Latitude (see GPRMC) 3.Latitude orientation (see GPRMC) 4.Longitude (see GPRMC) 5.Longitude orientation (see GPRMC) 6.GPS quality: 0 for invalid, 1 for having a GPS fix 7.Number of satellites 8.Horizontal deviation 9.Elevation: Height of Antenna over sea level 10.Elevation unit: M for meters 11.Geoidal separation 12.Geoidal separation unit: M for meters 13.Age of DGPS record: empty 14.DGPS reference: empty –Example:$GPGGA,111529.000,5008.2031,N,00619.1924,E,1,6,1.45,414.4,M,47.7,M,,*59<CR><LF>
–Reports data of the non-GPS sensors –Has 6 parameters: 1.Sensor: G for gyroscope, C for compass, B for barometer, T for accelerometer 2.Time: Format is HHMMSS.NNN, where NNN is an increasing counter that is reset when the time is updated by a new GPRMC or GPGGA record 3.Value of sensor X-axis (see Processing Raw Data) 4.Value of sensor Y-axis, empty for barometer (see Processing Raw Data) 5.Value of sensor Z-axis, empty for barometer (see Processing Raw Data) 6.Status: A for ok, N for invalid –Example: $PAAG,DATA,T,145802.0,2113,-63,8257,A*0B<CR><LF>
For more information please download our programers guide at http://spectran-developer.net/ftp/doc/G ... 140718.pdf