I'm actually not surprised this is possible. The thumbnail might just be a bad raw image of unrelated or unfiltered data. The UWB spectrum can be used for radar purposes to an absurd accuracy. We're talking sub-mm measurements. Bringing this to the wifi spectrum seems within the realms of possibility as the frequency is pretty similar. The difference is UWB radar is typically used in close quarters with a fixed radar where as the wifi source is probably further away or moving on a mobile phone or wearable.