边坡单元的SAR数据特征  

Study of characteristics of SAR data based on slope unit

作　　者：黄佳璇 杜伟超 王立伟[3] 谢谟文[1] 

机构地区：[1]北京科技大学 [2]61206部队 [3]燕山大学

出　　处：《测绘科学》2016年第10期111-114,180,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41372370)

摘　　要：针对传统D-InSAR技术以栅格单元为研究对象而无法充分反映地形条件的问题,该文提出了以边坡单位为研究对象的D-InSAR数据特征分析。通过基于边坡单元的区域地形因子与后向散射系数和相干系数关系的分析方法,建立了研究区域SAR数据的可信区域滤波方法,提取出了研究区域SAR数据分析结果的可信区域。该方法提高了SAR数据的有效性,为滑坡早期监测提供了可靠的数据基础。通过对金沙江乌东德区域的SAR数据实例分析,验证了该方法的实用性。The tradition based on grid units, which geological conditions, terrai al differential cannot n condi （SAR） data analysis. Based on the reflect t tlons slope on ynthetic aperture radar interferometry （D-InSAR） technique is he terrain features sufficient. In order to analyze the impact of landslide, slope unit was proposed for synthetic aperture radar unit relationship between terrain factor and backward scattering coefficient, coherence coefficient, an analysis method of SAR data credible zone was established. The credible zone of study area was extracted. This method improved SAR data validation and provided reliable data for early landslide detection. Wudongde hydropower area was used to verify the practicability of this method.

关 键 词：SAR 边坡单元 可信区域 

分 类 号：P208[天文地球—地图制图学与地理信息工程]