just got my BGT-31 (NaviGPS?Locosystec)
In SD Card logging it has options for logging various NMEA items.
GGA : ON 1sec : Time, position and fix type data.
GLL : OFF : Latitude, longitude, UTC time of position fix and status.
GSA : ON 1sec : GPS receiver operating mode, satellites used in the position solution, and DOP values.
GSV : ON 5sec : The number of GPS satellites in view satellite ID numbers, elevation, azimuth, and SNR values.
RMC : ON 1sec : Time, date, position, course and speed data.
VTG : OFF : Course and speed information relative to the ground.
ZDA : OFF : PPS timing message (synchronized to PPS).
SBN : OFF : Don’t KNOW
Can anyone explain what each means and what I should log to map accurately for OSM ?
Also besides OSM I am going to use this unit to
- create a log of all places I have traveled/hiked/biked, to watch on google earth in the future
- accurately geotag my pictures.
In view of this what items do I need to log, to get it right ?
I am a newbie, please help…