Abstract: Mechanical vibration or rotation of structures on a target may induce additional frequency modulations on the returned radar signal,which is called the micro-Doppler effect.Micro-Doppler can be regarded as a unique signature of the target and also brings contamination into the inverse synthetic aperture radar(ISAR) image.A method for imaging and micro-Doppler extraction of targets with rotating parts in strong ground clutter is presented.The one-order canceller method is utilized to filter out the ground clutter in the signal stretching process,and then a clear spectrogram of targets is obtained.Dealing with the spectrogram the micro-Doppler information can be gained as well as a clearer ISAR image.A computer simulation is given to prove the effectiveness of the proposed method.