INTERFERENCE MITIGATION IN AUTOMOTIVE RADAR SYSTEMS BY ARTIFICIAL DOPPLER MODULATION

A method of operating an automotive radar system (10) for avoiding interference from other radar systems is provided. The automotive radar system (10) comprises a radar transmitter unit (12) for transmitting a radar waveform (xTx,) towards a scene, a radar receiving unit (16) for receiving a radar waveform (xRx,) that has been reflected by a target (26, 28) in a scene, and an evaluation and control unit (20) for decoding range Doppler information from the received radar waveform (xRx,). The method comprises the step of transmitting (32) a first sequence (xTx) of radar waveforms and a second sequence () of radar waveforms towards the scene, the second sequence () of radar waveforms differing from the transmitted first sequence (xTx) of radar waveforms by a predetermined phase shift () suchthat each radar waveform () in the second sequence has a different predetermined phase shift (). The first range Doppler information and the second range Doppler information are decoded (36). A deviation of the second range D