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osqzss / gps-sdr-sim

Software-Defined GPS Signal Simulator
MIT License
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Doppler values correct? #238

Open ferorted opened 4 years ago

ferorted commented 4 years ago

Hi everyone, I'm testing your code with a Pluto SDR, and works fine with an uBlox GPS receiver. However my phones can't fix a location. Are the follow Doppler values correct?

GPS

Regards

osqzss commented 4 years ago

Check NAV-CLOCK message. You can find the total frequency offset caused by both the receiver and transmitter clocks. This should be typically less than a few ppm.

ferorted commented 4 years ago

Thank you, The read frequency is about 0.0020 ppm