基于SPECAN技术的毫米波SAR成像算法  

Millimeter Wave SAR Imaging Algorithm Based on SPECAN Technology

作　　者：邢涛[1] 胡庆荣[1] 李军[1] 王冠勇[1] 

机构地区：[1]北京无线电测量研究所,北京100854

出　　处：《信号处理》2015年第2期215-220,共6页Journal of Signal Processing

基　　金：国家自然科学基金(61271417)

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。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.

关 键 词：合成孔径雷达 频谱分析 毫米波 

分 类 号：TN957[电子电信—信号与信息处理]