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星载SAR成像的R-D算法研究
R-D Algorithm for Spaceborne SAR Imaging
【摘要】 对适用于星载SAR斜视情况下的距离-多普勒(R-D)算法进行了详细系统的理论分析,并对比了两种R-D算法的不同.分析了时域和频域两种距离徙动校正方法,证明了二次距离压缩的产生原因和实现途径.最后给出了成像结果,并提出了一些建议.
【Abstract】 The R-D algorithm used in squint mode spaceborne SAR is analyzed carefully in theory,and the difference between the two R-D algorithms is also discussed and compared.The methods for the correction of range migration in time and frequency are analyzed particularly.The reason for SRC and the way to complete SRC are given.Finally,the images of R-D algorithm are given,and some suggestions are proposed.
【关键词】 合成孔径雷达;
R-D算法;
二次距离压缩;
距离徙动;
【Key words】 synthetic aperture radar; R-D algorithm; secondary range compression; range migration;
【Key words】 synthetic aperture radar; R-D algorithm; secondary range compression; range migration;
【基金】 上海61486部队资助横向颗题
- 【文献出处】 四川大学学报(自然科学版) ,Journal of Sichuan University(Natural Science Edition) , 编辑部邮箱 ,2006年01期
- 【分类号】TN958
- 【被引频次】13
- 【下载频次】439