| 地震损毁建筑物的高分辨率SAR图像模拟与分析 |
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| 引用本文： | 温晓阳.地震损毁建筑物的高分辨率SAR图像模拟与分析[J].遥感学报,2009,13(1). |
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| 作者姓名： | 温晓阳 |
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| 作者单位： | 1. 中国科学院对地观测与数字地球科学中心,北京,100101;中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000
2. 中国科学院对地观测与数字地球科学中心,北京,100101 |
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| 摘 要： | 为了分析汶川地震震后高分辨率合成孔径(SAR)图像的城区建筑物特征,基于实际获取的机载X波段SAR图像,采用电磁模拟方法进行分析和研究.通过对城区的完整建筑和毁损建筑进行三维建模,采用射线跟踪的电磁计算方法和图像域积分的成像模拟方法得到不同受灾程度的建筑物SAR模拟图像.与真实SAR图像对比分析,提出的算法能够分析建筑物结构变化对SAR图像的影响,模拟主要的强散射点,能有效辅助SAR图像进行城区特征分析.
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| 关 键 词： | 合成孔径雷达SAR 建筑物 电磁模拟 |
The high resolution SAR image simulation and analysis of the damaged building in earthquake |
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| WEN Xiao-yang.The high resolution SAR image simulation and analysis of the damaged building in earthquake[J].Journal of Remote Sensing,2009,13(1). |
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| Authors: | WEN Xiao-yang |
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| Institution: | Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China;Cold and Arid Regions Environment and Engineering Research Institute,Chinese Academy of Sciences,Gansu Lanzhou 730000,China |
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| Abstract: | Based on the airborneX band SAR images, the electromagneticmethodwas used to analyze the characteristics of the
buildings afterWenchuan earthquake in the urban district of high resolution Synthesize Aperture Radar (SAR) images. After the
undamaged buildings and damaged building were constructed by3D models, the ray-tracing electromagnetic method and Image-
Domain-Integration imaging simulation method were used to simulate SAR images of buildings with different damage degrees.
Comparingwith the real SAR image, the algorithm presented in this paper can analyze the backscatter change due to building
structure, simulate themain scattering points, and effectively assist the analysis of the urban districtSAR image characteristics. |
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| Keywords: | SAR building simulation |
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