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osqzss / gps-sdr-sim

Software-Defined GPS Signal Simulator
MIT License
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HackRF seems to send datas but smartphone receive nothing. #237

Open Akhoriz opened 4 years ago

Akhoriz commented 4 years ago

Hi ! I need your help with my GPS Spoofing for my Engineering Student Project.

I downloaded the last ephemeris on the Nasa's ftp. Then created the .bin with: .\gps-sdr-sim.exe -b 8 -e .\brdc0510.20n -l -41.300988,174.775321,100 Then I sent the file to the HackRF with: .\hackrf_transfer.exe -t gpssim.bin -f 1575420000 -s 2600000 -a 1 -x 0

In the console I have this: call hackrf_set_sample_rate(2600000 Hz/2.600 MHz) call hackrf_set_hw_sync_mode(0) call hackrf_set_freq(1575420000 Hz/1575.420 MHz) call hackrf_set_amp_enable(1) Stop with Ctrl-C 5.2 MiB / 1.002 sec = 5.2 MiB/second 5.0 MiB / 1.002 sec = 5.0 MiB/second 5.2 MiB / 1.003 sec = 5.2 MiB/second 5.2 MiB / 1.003 sec = 5.2 MiB/second 5.2 MiB / 1.003 sec = 5.2 MiB/second

My smartphone received nothing even if I remove the Wifi Scanning & Perfect Location

I also tried to scan the 1575,420 MHZ with GQRX and I had only noise.

Do you have an idea ?

kevtheskin commented 4 years ago

Same here. Nothing :(

xxxxxaaaaaaaannnn commented 4 years ago

Hello, I posted #240 that might help you.

MSK2032 commented 2 years ago

you, can try using a tiny TCXO (external oscillator). It worked for me to resolve no signal reception...atleast for GPS receivers. The issue of few GNSS receivers in android mobile receiving and still not accepting the spoofed signals, is yet to be resolved.