中文摘要：

针对毫米波高分辨应用背景，文中分析了斜距展开的相位误差，指出斜距应展开到四次项以保证相位误差小于！／4，并采用CS处理得到了方位SPECAN处理前的信号表达式。通过仿真和实测数据对方位SPECAN处理及扇贝效应进行了研究与验证，采用CZT去除扇贝效应。基于实测数据的子孔径成像及图像拼接试验取得了较好的效果，验证了本文处理方法的正确性和可行性。

英文摘要：

For millimeter wave high resolution application,the paper first analyze the phase error of slant range unwrap, found that the slant range should express to forth item to make sure phase error less than !/4 and adopt CS processing to get signal unwrap before azimuth SPECAN processing.Then study and verify the azimuth SPECAN processing and sector phe-nomena by simulation and real data,delete sector phenomena by CZT.Sub-aperture imaging and image mosaic test based on real data verify the correctness and feasibility of the proposed method.