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测绘学报  2015 

多时相双极化合成孔径雷达干涉测量土地覆盖分类方法

DOI: 10.11947/j.AGCS.2015.20130244, PP. 533-540

Keywords: 多时相,极化,干涉合成孔径雷达,土地覆盖分类

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Abstract:

综合采用时相、极化和干涉3种维度的SAR数据进行土地覆盖分类。以黑龙江省逊克县多时相ALOSPALSAR数据覆盖区为研究区,利用不同时相极化SAR、干涉SAR信号对地物特征的敏感性,结合后向散射强度和干涉相干的时变特征进行地物解译,发展了基于多时相、多极化、干涉SAR数据的SVM土地覆盖分类方法。研究结果表明,引入双极化SAR中不同极化(HH-HV)间的相干系数,并结合所选择的时相特征、极化特征以及干涉相干特征进行分类,可解决双极化SAR影像中林地与城市及建设用地的混分问题,得到更高精度的土地覆盖分类结果。

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