Hi - finally got around to working with the LimeSDR-Mini and the gps-sdr-sim project and finally had some luck.
Created an rf data file with this, using 5Msps, 8bit char samples -
$ ./gps-sdr-sim -l 22.542883,114.062996,45 -e brdc2500.18n -s 5000000 -b 8 -o seg_r5_b8.s8 -d 1200
you may not want duration of 20 minutes though. Using the attach grc graph and I got it to work with:
- Qstars BT-818XT bluetooth gps
- Lenova TAB 2 A-10 running GPS Test+
- OnePlus 5T running GPS Test+
- Samsung GS4 running GPS Test+
and google maps of course. Turn off fine location in settings, set for gps only, put in airplane mode and restart and run the sketch first thing before it gets any other satellite reading.
Cannot upload the grc so posted it here: http://swigerco.com/GPS_Test_LimeSDR_Mini.grc
Would like to hear if anyone else has good luck with that.