| 基于多基线InSAR的叠掩区域高程重建方法 |
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| 引用本文： | 韩晓玲,毛永飞,王静,汪丙南,向茂生.基于多基线InSAR的叠掩区域高程重建方法[J].电子测量技术,2012(4):66-70,85. |
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| 作者姓名： | 韩晓玲 毛永飞 王静 汪丙南 向茂生 |
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| 作者单位： | 1. 中国科学院电子学研究所微波成像技术重点实验室 北京100190;中国科学院研究生院 北京100149
2. 中国科学院电子学研究所微波成像技术重点实验室 北京100190 |
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| 摘 要： | 叠掩是SAR成像中特有的一种几何失真现象,采用常规成像算法对其处理后会产生错误的高程。对于起伏较大的山区或者城区,叠掩区域广泛存在,如何正确将叠掩区域的高程信息恢复出来,已成为亟待解决的问题。根据多基线InSAR复图像相干系数的特点,建立了叠掩区域复信号的数学模型,将不同目标点各自对回波的贡献分离开来,由此给出了恢复叠掩区域目标点高程信息的方法。仿真结果表明了该方法的有效性和实用性。
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| 关 键 词： | 叠掩 InSAR 多基线 相干系数 |
DEM reconstruction method in layover areas based on multi-baseline InSAR |
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| Han Xiaoling
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Mao Yongfei
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Wang Jing
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Wang Bingnan
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Xiang Maosheng.DEM reconstruction method in layover areas based on multi-baseline InSAR[J].Electronic Measurement Technology,2012(4):66-70,85. |
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| Authors: | Han Xiaoling Mao Yongfei Wang Jing Wang Bingnan Xiang Maosheng |
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| Affiliation: | Han Xiaoling Mao Yongfei Wang Jing Wang Bingnan Xiang Maosheng (1. Science and Technology on Microwave Imaging Laboratory, Institute of Electronics, Chinese Academy of Sciences,Beijing 100190;2. Graduate University of the Chinese Academy of Sciences,Beijing 100149) |
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| Abstract: | Layover is a specific geometric distortion phenomenon in SAR imaging, which can generate an error elevation using conventional imaging algorithm. Layover phenomenon is widespread in steep terrain, so it is urgent and important to recover the elevation information of layover areas correctly. According to the characteristics of the coherence of the multi-baseline InSAR complex images,mathematical model in layover areas are established. It can separate different echo contribution of each target point and restore the elevation information of each target point in layover areas. The simulation results show the effectiveness and practicality of the method. |
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| Keywords: | layover InSAR t multi-baseline coherence |
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