A method of improving SCR for millimeter wave FM-CW radar without knowledge of target and clutter statistics

This paper proposes a new method for improving Signal-to-Clutter Ratio (SCR) for millimeter wave Frequency-Modulated-Continuous-Wave (FM-CW) radar. Received echoes of FM-CW radar can be categorized into two types due to either a target or clutter. Generally, the target received data have a stronger correlation with respect to different carrier frequencies than that of the clutter received data. This difference is exploited for estimating the statistics of target data from received data only, and a matched filter used for improving SCR is then designed using the knowledge of the statistics. The performance of the method is analyzed and evaluated experimentally for 60GHz band FM-CW radar. The simulation shows that the proposed method improves SCR better than competing with other methods. Key-Words: Matched filter, Stochastic process, Signal-to-clutter ratio, Millimeter wave, FM-CW radar, Ground clutter, Automotive radar