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合成孔径雷达在国土监测中的应用

作  者:
刘琦;岳彩荣;高振宇;李宁;章皖秋
单  位:
天津市地籍管理中心
关键词:
合成孔径雷达;遥感监测;国土资源
摘  要:
合成孔径雷达(SAR)具备微波极化和干涉特性,相比光学影像,对目标结构特征更为敏感,在监测地物方面具有一定优势.文章根据后向散射系数和干涉相干系数两个指标,对SAR影像拍摄的耕地、水体、森林、建筑物等常见地物特征进行分析归纳,以TanDEM-X在云南省勐腊县的一景数据为例,说明其在疑似建设用地图斑提取和地类图斑勾绘工作中的应用,证明SAR在国土监测中的有效性.
作  者:
LIU Qi;YUE Cai-rong;GAO Zhen-yu;LI Ning;ZHANG Wan-qiu;Tianjin Cadastral Management Center;Southwest Forestry University,College of Forestry;
单  位:
LIU Qi%YUE Cai-rong%GAO Zhen-yu%LI Ning%ZHANG Wan-qiu%Tianjin Cadastral Management Center%Southwest Forestry University,College of Forestry
关键词:
SAR;;Dynamic Monitoring;;Land Resources
摘  要:
SAR had characteristics of radar polarimetry and interferometry,which showed great potential in dynamic monitoring due to being sensitive to feature structure,compared with optical RS.This study selected backscattering and coherent coefficient as the indicators,analysed the characteristic of common scatters such as cultivated land,water,forest and constructions.According to experiments of TanDEM-X in Mengla county,Yunnan province,this study showed the ability to find suspected constructions and delineation features on the ground,while explaining effectiveness of SAR in dynamic monitoring of land resources.

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