Abstract:

A new method is proposed to solve the problem of range-velocity decoupling and motion compensation for high-speed target detection of Ultra-short-range Radar.The transmitted signal is a hybrid signal composed of Continuous Wave and Linear Frequency Modulation Continuous Wave (CW and LFMCW).First,the unambiguous velocity of a high-speed target is measured by CW beat signal.Then the velocity information is used to compensate LFMCW beat signal.And the range information of the target can be easily extracted from the compensated signal.The method realizes range-velocity decoupling and motion compensation of high-speed target detection.The effectiveness of the method is demonstrated by simulations.

Key words: ultra-short-range radar;high-speed target;motion compensation;range-velocity decoupling