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首页> 外文会议>ISPRS Congress >DETECTING DISASTER DAMAGE FROM 2015 TYPHOON ETAU BY THE COMBINED USE OF DIFFERENT SAR SATELLITES
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DETECTING DISASTER DAMAGE FROM 2015 TYPHOON ETAU BY THE COMBINED USE OF DIFFERENT SAR SATELLITES

机译：通过联合使用不同的SAR卫星来检测2015年台风伊息的灾害损伤

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In this study, focusing on the flood damages in Joso City in Ibaraki Prefecture, we estimated the extent of inundation using multiple SAR satellites and examined their varied results depending on observational bands. We further examined the potential utilization of combined different SAR data for initial responses to disasters. For classification of the inundated areas, a binary classification was used with a threshold of backscatter coefficient and the difference in backscatter coefficient between the usual condition and the situation after the breach. In the extraction of inundation after the breach of the levee, COSMO-SkyMed showed the accuracy of 72.6%, while ALOS-2 PALSAR-2 indicated the accuracy of 66.1%. The extent of inundation were extracted by difference of backscatter coefficient using the data taken by Sentinel-1 and ALOS-2 PALSAR-2 before the breach of the levee, and the comparison analysis results showed that the extent of inundation expanded after the breach of the levee. From the above results, we graded the characteristics of the satellites by their observational bands and spatial resolution.
机译：在这项研究中，专注于茨城县济索市的洪水损害，我们估计了使用多个SAR卫星的淹没程度，并根据观察乐队检查了各种结果。我们进一步审查了组合不同SAR数据的潜在利用，以便对灾害的初始反应。对于淹没区域的分类，二进制分类与反向散射系数的阈值和违规后常规条件与情况之间的反向散射系数的差异。在泄露泄露后的淹没后，Cosmo-Skymed显示出72.6％的准确性，而Alos-2 Palsar-2表示准确度为66.1％。使用Sentinel-1和Alos-2 Palsar-2在违反堤坝之前，通过Sentinel-1和Alos-2 Palsar-2所采取的数据的差异来提取淹没程度，并且比较分析结果表明，违约后的惩罚程度扩大堤坝。根据上述结果，我们通过观察频段和空间分辨率逐渐评估了卫星的特征。

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