Because of targets complicated movement, conventional ISAR imaging algorithm can not meet the demands of maneuvering target imaging.On the basis of analyzing the echo’s non-linear Doppler shifts caused by maneuvering target movements, a new ISAR imaging method based on AOK TFR is proposed.The instantaneous target images can be obtained by calculating the AOK TFR of different range bins.Compared with the classical time frequency distribution, the AOK TRF has no cross item interference from multi-component signals.Meanwhile, the instantaneous Doppler frequencies of echoes in range bins are estimated.According to the estimated Doppler frequencies, imaging time can be selected.The simulationd results demonstrate the validity of the proposed method.