根据雷达高分辨距离像具有非最小相位和小波特征的信号性质 ,采用 Z变换方法给出和研究了高分辨距离像的微分复倒谱的性质。提出用微分复倒谱方法实现雷达距离像幅度归一化和实现距离像方位对齐的原理及其算法。数值计算和实测雷达数据的计算机仿真结果表明 ,理论分析是正确的 ,提出的算法是可行的 ;该方法适用于雷达目标识别 According to the signal properties of high-resolution radar image with non-minimum phase and wavelet features, the Z-transform method is used to give and study the properties of differential complex cepstrum of high resolution range image. The principle and algorithm of normalization of radar range image amplitude and azimuth alignment of distance image by differential cepstrum are proposed. Computer simulation results of numerical calculation and measured radar data show that the theoretical analysis is correct and the proposed algorithm is feasible. The proposed method is suitable for radar target recognition