HDR300

The HDR300 is a ground surveillance radar operating in the W-band (IEEE designation) or M-band (NATO designation) at frequencies between 75 and 76 GHz. It is designed for perimeter surveillance at airports and for general security and ground surveillance applications, with an instrumented range of up to 3 km and a beamwidth of 0.9°. The system can also function as a Surface Movement Radar within a network, and is available in three models, each offering distinct instrumented range and range resolution options of either 0.155 or 0.23 meters.

radartutorial.eu: https://www.radartutorial.eu/19.kartei/05.perimeter/karte053.en.html