Patent ID: 7439900

Claim:
A radar system for detecting a target, comprising: an AD conversion unit configured to convert an analog signal obtained from an antenna into a digital signal; a resampling process unit configured to obtain a target movement from an n-th pulse of a plurality of transmitted signals; said target movement being based on a first pulse of the plurality of transmitted signals from the antenna; said resampling process unit configured to correct the target movement by performing a resampling in accordance with a resampling parameter determined based on the target movement, and in said resampling, a reference numeral of the target movement for the digital signal converted by the AD conversion unit is inverted; a frequency analysis unit configured to perform a frequency analysis of a signal from the resampling process unit; a time-frequency analysis unit configured to perform a time-frequency analysis of the signal from the resampling process unit; and a target detection unit configured to detect a target based on a signal of which the frequency analysis is performed by the frequency analysis unit and a signal of which the time-frequency analysis is performed by the time-frequency analysis unit.