Abstract:The signal model of the target with single and multiple scattering points is established. And the modulation of the radar echoes from rotating scattering point is analyzed. The echo signal of multi-scattering points is separated by the “CLEAN” method. Use different Doppler modulated signal by acceleration and jerk to perform match Fourier transform for the echo signal. Then, the acceleration and jerk parameters are estimated by matching pursuit criterion. The least square method is utilized to estimate rotation frequency of the target and other rotation parameters of the target may be estimated afterwards. This method can work well when Doppler frequency aliasing exists. In the end, the simulation and experiment verify the effectiveness of the method.