gnss_accuracy_and_error_oer
GNSS accuracy and error lesson
A visual lesson on GNSS accuracy and error
NMEA parsing (Python script)
The extract_nmea_data.py script in the processing folder will parse NMEA data and split it into the following CSV folders:
- as_data ($GPGSA): containing DOP and identifiers of satellites used for position fix.
- ll_data ($GPGGA): contains the date, time, latitude and longitude.
- mv_data ($GPRMC): contains movement data such as speed, bearing.
- sv_data ($GPGSV/GLGSV): contains the satellite details (e.g., type, elev, azim, SNR).
- tg_data ($GPVTG): contains bearings and speeds. Some repetition from mv_data.
Instructions
Place your nmea data in the nmea_data folder and then execute the script as suits you:
python3 extract_nmea_data.py nmea_data/nmea_file.csv
python3 extract_nmea_data.py nmea_data/*
python3 extract_nmea_data.py nmea_data/f1.csv nmea_data/f2.csv
Note that the llid allows synchronizing data, such as date or location, between files.
Note
All resources were developed as part of the digilego project.