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osqzss / gps-sdr-sim

Software-Defined GPS Signal Simulator
MIT License
2.75k stars 773 forks source link

Finally! I spoofed my GPS receivers and low end android phones successfully but need help! #332

Open Imtiaz08 opened 2 years ago

Imtiaz08 commented 2 years ago

Hello sir @osqzss,

I don't have words to thank you for helping me so much and guiding me on different occasions. I have successfully spoofed my GNSS receiver and some low-end smartphones. I am studying the code and trying to learn it well so that I can work further and develop a receiver spoofer i.e. an algorithm that captures RAW signal, modify it with desired position and time and then retransmit it towards a victim device.

I've learned a lot of things from this code. However, there are a few things that are still confusing me.

  1. what is the databit? why is only 1 databit being calculated from a dword of 1 satellite per time?
  2. Where did the antenna pattern, sintable512, and costable512 values takem from?

I hope you will answer my questions whenever you have time.

thank you once again and have a very nice day

With profound regards Imtiaz nabi

vxling commented 1 year ago

Any update?

Imtiaz08 commented 1 year ago

None yet, the admin seems too busy to answer

vxling commented 1 year ago

Maybe you can share more details, eg: i replaced plutosdr crystal with 0.5ppm one, I got 3d fix with U-blox 8, with static mode, but doesn’t work on the iphone 14

Imtiaz08 commented 1 year ago

I can get a 3D fix with any ublox receiver using a HackRF one but this library seems to be not working on smartphones anymore. Maybe due to upgraded firmwares of the smartphone devices or the addition of other sensors.