| 基于公共余数最优估计的多通道干涉SAR高程重建方法 |
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| 引用本文： | 王思雨,陈立福,袁志辉,邢学敏,毛永飞,武鸿.基于公共余数最优估计的多通道干涉SAR高程重建方法[J].中国空间科学技术,2018,38(2):71-76. |
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| 作者姓名： | 王思雨 陈立福 袁志辉 邢学敏 毛永飞 武鸿 |
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| 作者单位： | 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 |
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| 基金项目： | 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） |
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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。
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| 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 |
| 收稿时间： | 2017-06-13 |
An elevation reconstruction method of multi-channel InSAR based on optimal estimation of common remainder#br# |
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| WANG Siyu,CHEN Lifu,YUAN Zhihui,XING Xuemin,MAO Yongfei,WU Hong.An elevation reconstruction method of multi-channel InSAR based on optimal estimation of common remainder#br#[J].Chinese Space Science and Technology,2018,38(2):71-76. |
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| Authors: | WANG Siyu CHEN Lifu YUAN Zhihui XING Xuemin MAO Yongfei WU Hong |
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| Institution: | 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 |
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| 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. |
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| Keywords: | Chinese remainder theorem interferometric synthetic aperture rada (InSAR) optimal estimation elevation reconstruction execution efficiency |
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