Interference Detection and Suppression Based on Plane Rotation in Range-Time Domain

A wide deployment of radars, such as a surveillance radar network and many vehicles equipped with automotive radars in traffic, will make the signal environment very challenging. If the radars are active simultaneously, one radar will interfere with other radars. In a critical case, two radars having similar parameters interfere with each other and the separation between them is double to the range to a target. In this case, the target can totally be hidden by the relatively strong interference. In this paper, an interference suppression method is introduced for this type of interference. The method is based on plane rotation in the range-time domain and interference detection and removal in the range-Doppler domain. The experiment shows the feasibility of the method.