Radar signal processing system and method

The invention provides a radar signal processing system and method for acquiring Doppler frequencies from sampled digital input signals of frequency modulated continuous wave (FMCW) radar radiation. The system comprises a transmitting module, a changing module, an extracting module and an adjusting module, the transmitting module is used for repeatedly transmitting radar signals with unique frequency change and pulse repetition interval; the changing module is used for changing the frequency change or pulse repetition interval of the radar signal transmitted by the transmitting module; the extraction module is used for extracting an interference signal from the changed radar signal when the radar signal of which the frequency is changed or the pulse repetition interval is changed interferes with another radar signal; the adjusting module is used for adjusting the radar signal to reduce extraction interference signals. The system and the method provided by the invention can reduce interference signals of vehic