在实际微波成象系统中,其模糊成象窗口往往远大于目标成象窗口。据此我们提出一种有效的成象前多采样率预处理方法。它可以很好地压缩原始频域数据,降低成象处理数据量和对计算机存储空间的要求,提高数字成象处理效率。为验证该方法的可行性,文中最后给出了对微波暗室采集数据的处理结果。 In the actual microwave imaging system, its fuzzy imaging window is often much larger than the target imaging window. Therefore, we propose an effective pre-imaging multi-sample rate pre-processing method. It can compress the original frequency domain data well, reduce the amount of image processing data and computer storage space requirements, improve the efficiency of digital imaging processing. In order to verify the feasibility of the method, the results of the processing of the data collected in the anechoic chamber are given.