中国空间科学技术

中国空间科学技术 ›› 2018, Vol. 38 ›› Issue (2): 71-76.doi: 10.16708/j.cnki.1000-758X.2018.0008

• 技术交流 • 上一篇    下一篇

基于公共余数最优估计的多通道干涉SAR高程重建方法

王思雨1，陈立福1,*，袁志辉1，邢学敏2，毛永飞3，武鸿1   

  1. 1. 长沙理工大学 电气与信息工程学院，长沙  410004
    2. 长沙理工大学 交通运输工程学院，长沙  410004
    3. 北京空间飞行器总体设计部，北京  100094
  • 收稿日期:2017-06-13 接受日期:2018-01-15 出版日期:2018-03-25 发布日期:2020-02-12
  • 通讯作者: 陈立福，（1979-），男，讲师，硕士生导师，lifu_chen@139.com，研究方向为SAR及InSAR信号处理研究
  • 作者简介:王思雨（1994-）,女，硕士研究生，642765541@qq.com，研究方向为多通道干涉SAR高程重建
  • 基金资助:
    国家自然科学基金（41201468，61302165，61701047）；湖南省教育厅项目（16B004，16C0043）；湖南省（长沙理工大学）研究生科研项目资助（CX2016SS08）；长沙理工大学公路养护技术国家工程实验室开放基金重点资助项目（kfj150105）

An elevation reconstruction method of multi-channel InSAR based on optimal estimation of common remainder#br#

WANG Siyu1, CHEN Lifu1,*, YUAN Zhihui1, XING Xuemin2, MAO Yongfei3, WU Hong1   

  1. 1. School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410004, China
    2. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410004, China
    3. Beijing Institude of Spacecraft System Engineering, Beijing 100094, China
  • Received:2017-06-13 Accepted:2018-01-15 Published:2018-03-25 Online:2020-02-12

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摘要： 针对多通道干涉SAR高程重建方法计算效率较低的问题，提出了一种基于公共余数最优估计的多通道干涉SAR快速高程重建方法。该算法首先对干涉相位去除平地效应后，得出每幅干涉图像任意一个像素对应的缠绕干涉相位，构造出关于干涉相位模糊数的同余方程组；然后利用最优估计法求解出带噪声余数的公共余数的最优估计值，求解出各目标的高程值；最后再利用改进措施得到更高精度的高程重建结果。试验数据处理结果表明，该方法使得多通道干涉SAR高程重建的计算效率有了显著提升。

关键词: 中国余数定理, 干涉合成孔径雷达（InSAR）, 最优估计, 高程重建, 执行效率

Abstract: To improve computational efficiency of multichannel InSAR elevation reconstruction, a rapid elevation reconstruction method based on the optimal estimation of remainder was proposed. Firstly, after the removal of the flat-earth effect, the wrapped interferometric phase of each pixel was drawn and congruence equations of interferometric phase fuzzy number were constructed. Secondly, the optimal estimation method was used to solve the optimal estimation of the common remainder with noise, and the elevation of each target was solved. Finally, the improved method was used to get higher precision reconstruction results. Experimental results show that the algorithm significantly improves the computational efficiencyof multichannel InSAR elevationre construction.

Key words: Chinese remainder theorem, interferometric synthetic aperture rada (InSAR), optimal estimation, elevation reconstruction, execution efficiency