A method of operating an automotive radar system for avoiding interference by other radar systems, the automotive radar system including - a radar transmitter unit that is configured to transmit radar waveforms ( x Tx , x̃ Tx, ) having a radar carrier frequency towards a scene, - a radar receiving unit that is configured for receiving radar waveforms ( x Rx , x̃ Rx ) that have been transmitted by the radar transmitter unit and have been reflected by a target in the scene, and - an evaluation and control unit that is configured for decoding range-Doppler information from the radar waveforms ( x Rx , x̃ Rx ) received by the radar receiving unit , the method comprising steps of - transmitting a first sequence of radar waveforms ( x Tx ) towards a scene, - receiving first radar waveforms ( x Rx ) that have been reflected by a target hit by the transmitted first sequence of radar waveforms ( x Tx ), - decoding first range-Doppler information from the received first radar waveforms ( x Rx ), - transmitting at least a second sequence of radar waveforms ( x̃ Tx,k ) towards the scene that differs from the first transmitted sequence of radar waveforms ( x Tx ) by predetermined phase shifts ( φ k ) such that each radar waveform ( x̃ Tx,k ) of the second sequence has a different predetermined phase shift ( φ k ), - receiving second radar waveforms ( x̃ Rx,k ) that have been reflected by the target hit by the transmitted second sequence of radar waveforms ( x̃ Tx,k ), - decoding second range-Doppler information from the received second radar waveforms ( x̃ Rx,k ) , - comparing deviations of the second range-Doppler information from the first range-Doppler information to at least one predetermined deviation value, and - based on the results of the comparing , identifying a potential interference condition. - a radar transmitter unit that is configured to transmit radar waveforms ( x Tx , x̃ Tx, ) having a radar carrier frequency towards a scene, - a radar receiving unit that is configured for receiving radar waveforms ( x Rx , x̃ Rx ) that have been transmitted by the radar transmitter unit and have been reflected by a target in the scene, and - an evaluation and control unit that is configured for decoding range-Doppler information from the radar waveforms ( x Rx , x̃ Rx ) received by the radar receiving unit , the method comprising steps of - transmitting a first sequence of radar waveforms ( x Tx ) towards a scene, - receiving first radar waveforms ( x Rx ) that have been reflected by a target hit by the transmitted first sequence of radar waveforms ( x Tx ), - decoding first range-Doppler information from the received first radar waveforms ( x Rx ), - transmitting at least a second sequence of radar waveforms ( x̃ Tx,k ) towards the scene that differs from the first transmitted sequence of radar waveforms ( x Tx ) by predetermined phase shifts ( φ k ) such that each radar waveform ( x̃ Tx,k ) of the second sequence has a different predetermined phase shift ( φ k ), - receiving second radar waveforms ( x̃ Rx,k ) that have been reflected by the target hit by the transmitted second sequence of radar waveforms ( x̃ Tx,k ), - decoding second range-Doppler information from the received second radar waveforms ( x̃ Rx,k ) , - comparing deviations of the second range-Doppler information from the first range-Doppler information to at least one predetermined deviation value, and - based on the results of the comparing , identifying a potential interference condition. <EOS>