DAMAGE ASSESSMENT OF BRIDGES USING SPATIAL CHARACTERISTICS OF HIGH-RESOLUTION SATELLITE SAR INTENSITY IMAGES
DAMAGE ASSESSMENT OF BRIDGES USING SPATIAL CHARACTERISTICS OF HIGH-RESOLUTION SATELLITE SAR INTENSITY IMAGES
复制标题
利用高分辨率卫星 SAR 强度图像的空间特征进行桥梁损伤评估
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Wen Liu
中科院分区：
文献类型：
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作者：
F. Yamazaki;Kazuki Inoue;Wen Liu
卫星上的合成孔径雷达（SAR）传感器不受天气和阳光条件的影响，适合于应急响应中的信息收集。本研究试图提取日本东北部太平洋沿岸的倒塌桥梁，由于2011年3月11日的Mw9.0地震，海啸广泛淹没。首先，利用事前GIS数据提取桥梁的位置。然后，我们试图检测倒塌或冲走的桥梁s设置一个适当的阈值上的SAR后向散射系数沿着的桥梁的纵向轴上只使用灾后高分辨率TerraSAR-X图像。将检测结果与光学图像和损伤调查报告进行了对比，验证了SAR强度图像在桥梁损伤检测中的有效性。F.山崎K. Inoue，W.材料和结构机械|VI（2016），1，PP.第163-170段
Synthetic Aperture Radar (SAR) sensors onboard sat ellites are suitable for information gathering in emergency response since t hey are not affected by weather and sunlight conditions. This study tries to extract co llapsed bridges in the Pacific-coast of Tohoku, Japan, where the tsunamis inundated widely due to the Mw 9.0 earthquake on March 11, 2011. First, the positions of bridges were extr acted using pre-event GIS data. Then, we attempted to detect collapsed or washed-away bridge s by setting a proper threshold value on the SAR backscattering coefficient along the bridge ’s longitudinal axis using only a postevent high-resolution TerraSAR-X image. The results were compared with optical images and damage investigation reports, and then the effectiv use of SAR intensity image in the detection of bridge damage was demonstrated. F. Yamazaki, K. Inoue, W. Liu Meccanica dei Materiali e delle Strutture | VI (2016), 1, PP. 163-170 164