ESP32 anrenna array to see WiFi

Jeija uses WiFi antennas to detect the source of the signal. My understanding is that the strength of the signal is used to calculate the position of the source. Interstingly, the device can also see the reflection from the wall.

In a situation when there is no line of sight, he moves the devices all over the area then uses a self-supervised ML model to estimate the geometry of the are.