The QuadRF (pictured above) a phased-array radio built around a Raspberry Pi 5 and an FPGA board with picosecond-level timing. It does advanced signal processing and beamforming. It can see WiFi through walls and track drones in flight. If the open source community can come up with something like this, just imagine what governments are capable of. When you plug a computer into a network, tools like Wireshark can show all the hidden traffic you might not even know is there. WiFi packets are the same, but those travel through the air, allowing snooping without physical access.
  • microfiche [he/him]@hexbear.netEnglish
    5·
    3 months ago

    Triangulation is not a new concept. I used to do fox hunting stuff with SDRs and beacons. This is just a v2/v3 of the same thing overlayed onto video/still images.

    This has been around for quite a while. I’ve done scaled down versions of this with SDRs and satellites floating by in space.