DAR

The DAR (Duvar Arkası Radar, or "Through-The-Wall-Radar") is an ultra-wideband (UWB) ground surveillance radar operating in the K band. It is designed to detect the presence and location of people within inaccessible enclosed spaces, even behind walls, in darkness, or through smoke. With an instrumented range of 22 meters, the DAR system is suitable for critical applications such as hostage rescue and firefighting operations where locating individuals inside buildings is essential.

radartutorial.eu: https://www.radartutorial.eu/19.kartei/05.perimeter/karte042.en.html