WiFi Time of Flight

  • I am interested in getting the WiFi time of flight in hopes of estimating the distance to a WiFi access point. Has anyone tried this before? I am using a LoPy (I also have a WiPy available).

    As a first step, is there any way to request a response from an access point, such as a rejected attempt to connect or confirmation of connection?


  • I have tried this before with LoRa and it didn't work. I expect the same result with Wi-Fi as the clock and other network delays are the biggest problems. To get accurate results you would need a very reliable clock, which isn't available. Also ntp servers will only let you sync up to a certain accuracy which is not good enough by far. Fingerprinting, multilateration etc. are maybe alternatives you could check out.

Pycom on Twitter

Looks like your connection to Pycom Forum was lost, please wait while we try to reconnect.