Abstract
In this paper a Keystone transform based MTD processing is proposed for multi-cycle signals to solve the MTRC (migration through range cell) problem in linear frequency-modulated continuous wave (LFMCW) radar. Analysis shows that MTRC is introduced by the linear coupling of fast time and slow time in multi-cycle beat signals. Resorting to the decoupling principle of Keystone transform and under consideration of the characteristics of beat signals, a transform expression is given, which is independent of target parameters. The relation between this transform and the direct motion compensation is further discussed, and a general applicable condition is derived. Simulation results testify the conclusion and the efficiency of the method.
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