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一种俯冲段子孔径SAR大斜视成像及几何校正方法

李震宇 梁毅 邢孟道 保铮

李震宇, 梁毅, 邢孟道, 保铮. 一种俯冲段子孔径SAR大斜视成像及几何校正方法[J]. 电子与信息学报, 2015, 37(8): 1814-1820. doi: 10.11999/JEIT141516
引用本文: 李震宇, 梁毅, 邢孟道, 保铮. 一种俯冲段子孔径SAR大斜视成像及几何校正方法[J]. 电子与信息学报, 2015, 37(8): 1814-1820. doi: 10.11999/JEIT141516
Li Zhen-yu, Liang Yi, Xing Meng-dao, Bao Zheng. New Subaperture Imaging Algorithm and Geometric Correction Method for High Squint Diving SAR Based on Equivalent Squint Model[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1814-1820. doi: 10.11999/JEIT141516
Citation: Li Zhen-yu, Liang Yi, Xing Meng-dao, Bao Zheng. New Subaperture Imaging Algorithm and Geometric Correction Method for High Squint Diving SAR Based on Equivalent Squint Model[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1814-1820. doi: 10.11999/JEIT141516

一种俯冲段子孔径SAR大斜视成像及几何校正方法

doi: 10.11999/JEIT141516
基金项目: 

国家自然科学青年基金(61101245)和中央高校基本科研业务费专项资金(K5051302046)

New Subaperture Imaging Algorithm and Geometric Correction Method for High Squint Diving SAR Based on Equivalent Squint Model

  • 摘要: 俯冲合成孔径雷达(SAR)成像由于垂直向下速度的存在,使得沿水平飞行方向不再满足平移不变性,导致常规全孔径成像算法无法直接运用于俯冲段的大斜视子孔径成像。针对这些问题,该文基于俯冲等效平飞模型以及子孔径成像特性提出一种俯冲段子孔径SAR大斜视成像算法 频域相位滤波算法(FPFA)。其创新思想是通过方位频域引入滤波因子校正方位空变。由于俯冲等效平飞模型会造成成像平面的旋转,引起较大的图像畸变,为了解决该问题,该文进一步提出一种基于反向投影的快速几何校正方法,得到近似无畸变或畸变较小的地距图像。仿真和实测数据处理验证该文成像方法和几何校正方法的有效性。
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出版历程
  • 收稿日期:  2014-11-27
  • 修回日期:  2015-03-27
  • 刊出日期:  2015-08-19

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