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基于定标器相位梯度提取的圆迹SAR轨迹重建方法

郭振宇 林赟 洪文 谭维贤 王彦平

郭振宇, 林赟, 洪文, 谭维贤, 王彦平. 基于定标器相位梯度提取的圆迹SAR轨迹重建方法[J]. 电子与信息学报, 2015, 37(8): 1836-1842. doi: 10.11999/JEIT140950
引用本文: 郭振宇, 林赟, 洪文, 谭维贤, 王彦平. 基于定标器相位梯度提取的圆迹SAR轨迹重建方法[J]. 电子与信息学报, 2015, 37(8): 1836-1842. doi: 10.11999/JEIT140950
Guo Zhen-yu, Lin Yun, Hong Wen, Tan Wei-xian, Wang Yan-ping. Circular SAR Trajectory Reconstruction Based on Phase Gradient of Calibrators[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1836-1842. doi: 10.11999/JEIT140950
Citation: Guo Zhen-yu, Lin Yun, Hong Wen, Tan Wei-xian, Wang Yan-ping. Circular SAR Trajectory Reconstruction Based on Phase Gradient of Calibrators[J]. Journal of Electronics & Information Technology, 2015, 37(8): 1836-1842. doi: 10.11999/JEIT140950

基于定标器相位梯度提取的圆迹SAR轨迹重建方法

doi: 10.11999/JEIT140950

Circular SAR Trajectory Reconstruction Based on Phase Gradient of Calibrators

  • 摘要: 圆迹合成孔径雷达(CSAR)高分辨率成像,对惯导系统的精度和稳定性提出了更高的要求,运动补偿技术是关键技术之一。该文首先分析了轨迹测量误差引起的相位误差,然后针对相位误差的空变性给出一种基于定标器相位梯度提取的圆迹SAR轨迹重建方法。该方法从SAR回波数据中提取定标器沿方位向的相位梯度,结合多个定标器的相位梯度,利用三边测量法重建高精度圆迹SAR轨迹,用于获取高质量的CSAR图像。该方法解决了轨迹测量误差引起的图像散焦问题,可实现整个场景的有效聚焦。仿真结果验证了该方法的正确性和有效性。
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出版历程
  • 收稿日期:  2014-07-17
  • 修回日期:  2015-05-07
  • 刊出日期:  2015-08-19

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