玉树地震灾情SAR遥感监测与信息服务系统
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摘要
在玉树地震中,中国首套自主知识产权的机载多波段多极化干涉SAR测图系统,发挥全天时主动遥感的优势,成功服务于抗震救灾中。依据玉树地震灾情综合地理信息监测与评估工作,着重探讨SAR遥感影像用于地震灾情监测与评估中的处理方法和技术路线,研究制定了地震灾区灾情综合地理信息监测指标,通过快速几何处理、快速变化信息提取、快速目标判读和灾害空间危险性评估,实现了玉树地震震区灾情综合地理信息的解译、制图和统计评估。在此基础上,开发了玉树地震灾情综合地理信息服务系统,实现了灾情监测信息的综合管理、可视化查询和统计分析。
The SAR system with its all-weather and all-time imaging capabilities emerged as a very important remote sensing data source for earthquake monitoring and disaster relief. After the recently occurred earthquake in Yushu county, Qinghai province, an airborne SAR system equipped with X-band dual antenna interferometric sensor and P-band fully polarized sensor has been successfully used in disaster monitoring and relief actions. The system is the first airborne SAR system with full intellectual property owned by China. This paper summarizes the Yushu Earthquake remote sensing monitoring and information ser-vice system, including the data, processing methodologies and information service. The emphasis is put on the application of airborne SAR images to disaster information extraction and assessment. First, the parameters characterizing the content of earthquake disaster remote sensing monitoring are determined, which include the information of urban and rural residence, infrastrcucture, geological disasters and farmland damage. The processing methodologies of optical and SAR data for earthquake disaster information interpretation, mapping and risk evaluation are presented. The process chain consists of quick geometric processing, change detection, quick target interpretation and quick spatial risk assessment for disaster. On the basis of the earth-quake information including those extracted from remotely sensed images and other existing social and geospatial data, a system of Yushu Earthquake disaster situation geographic information service has been developed, to facilitate the management, visualization, and statistical analysis of the earthquake disaster information.
The SAR system with its all-weather and all-time imaging capabilities emerged as a very important remote sensing data source for earthquake monitoring and disaster relief. After the recently occurred earthquake in Yushu county, Qinghai province, an airborne SAR system equipped with X-band dual antenna interferometric sensor and P-band fully polarized sensor has been successfully used in disaster monitoring and relief actions. The system is the first airborne SAR system with full intellectual property owned by China. This paper summarizes the Yushu Earthquake remote sensing monitoring and information ser-vice system, including the data, processing methodologies and information service. The emphasis is put on the application of airborne SAR images to disaster information extraction and assessment. First, the parameters characterizing the content of earthquake disaster remote sensing monitoring are determined, which include the information of urban and rural residence, infrastrcucture, geological disasters and farmland damage. The processing methodologies of optical and SAR data for earthquake disaster information interpretation, mapping and risk evaluation are presented. The process chain consists of quick geometric processing, change detection, quick target interpretation and quick spatial risk assessment for disaster. On the basis of the earth-quake information including those extracted from remotely sensed images and other existing social and geospatial data, a system of Yushu Earthquake disaster situation geographic information service has been developed, to facilitate the management, visualization, and statistical analysis of the earthquake disaster information.
引文
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Yang W,Sun H,Xu X,Cao Y F and Xu G.2004.Study on target inter-pretation in SAR image.Systems Engineering and Electronics,26(10):1336—1339
Zhang J X,Liu Z J and Liu J P.2008.Remote sensing monitoring of the Wenchuan Earthquake Disa ster Situation and the Information Service System.Journal of Remote Sensing,12(6):871—876
胡德勇,李京,陈云浩.2007.GIS支持下滑坡灾害空间预测方法研究.遥感学报,11(6):852—859
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杨文,孙洪,徐新,曹永锋,徐戈.2004.SAR图像目标解译算法研究.系统工程与电子技术,26(10):1336—1339
张继贤,刘正军,刘纪平.2008.汶川大地震灾情综合地理信息遥感监测与信息服务系统.遥感学报,12(6):871—876
中国地质调查局.2008.地质灾害航天遥感应急调查技术要求(草案)
Hu D Y,Li J,Chen Y H.2007.GIS-based landslide spatial prediction methods,a case study in cameron highland,malaysia.Journal of Remote Sensing,11(6):852—859
Liu Y H,Qu C Y,Shan X J,Song X G,Zhang G F and Zhang G H.2010.Application of SAR data to damage identification of the Wenchuan earthquake.Acta Seismologica Sinica,32(2):214—223
Yang W,Sun H,Xu X,Cao Y F and Xu G.2004.Study on target inter-pretation in SAR image.Systems Engineering and Electronics,26(10):1336—1339
Zhang J X,Liu Z J and Liu J P.2008.Remote sensing monitoring of the Wenchuan Earthquake Disa ster Situation and the Information Service System.Journal of Remote Sensing,12(6):871—876
胡德勇,李京,陈云浩.2007.GIS支持下滑坡灾害空间预测方法研究.遥感学报,11(6):852—859
刘云华,屈春燕,单新建,宋小刚,张桂芳,张国宏.2010.SAR遥感图像在汶川地震灾害识别中的应用.地震学报,32(2):214—223
杨文,孙洪,徐新,曹永锋,徐戈.2004.SAR图像目标解译算法研究.系统工程与电子技术,26(10):1336—1339
张继贤,刘正军,刘纪平.2008.汶川大地震灾情综合地理信息遥感监测与信息服务系统.遥感学报,12(6):871—876
中国地质调查局.2008.地质灾害航天遥感应急调查技术要求(草案)
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