4 ms·

I've no doubt you can do all the necessary number crunching in Octave/Matlab to implement things like a time-domain reflectometer - the DSP is well known in dom

I've no doubt you can do all the necessary number crunching in Octave/Matlab to implement things like a time-domain reflectometer - the DSP is well known in domains like seismology for prospecting, artillery ranging and calculating room shape from sound, as with the image source method. I think the hard part for an amateur lab is antenna stuff. I am not an RF engineer, nor have I read the linked papers in detail, but I'm guessing that to do this well you need phased arrays or multiple directed YAGI style elements - because all the methods I know from acoustics use multiple microphones, often closely calibrated etc.

transpute 4y ago
There's 1000+ papers on attackers using Wi-Fi sensing, but almost none on defenses, https://scholar.google.com/scholar?cites=4354757827101869878 https://scholar.google.com/scholar?cites=4354757827101869878 Wi-ESP is an OSS project for Wi-Fi sensing with low-cost ESP32 devices, https://wrlab.github.io/Wi-ESP/ https://wrlab.github.io/Wi-ESP/ & https://academic.oup.com/jcde/article/7/5/644/5837600 https://academic.oup.com/jcde/article/7/5/644/5837600