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基于多极化机载合成孔径雷达(SAR)数据的水稻识别
引用本文:李坤,邵芸,张风丽.基于多极化机载合成孔径雷达(SAR)数据的水稻识别[J].浙江大学学报(农业与生命科学版),2011,37(2).
作者姓名:李坤  邵芸  张风丽
作者单位:中国科学院遥感应用研究所,北京,100101
基金项目:国防科工委资助项目,中国科学院知识创新工程重要方向资助项目
摘    要:基于多极化(HH/HV/VH/VV)机载合成孔径雷达(SAR)数据,分析水稻和典型地物在不同极化方式上的响应特征及其差异,并根据水稻的极化响应特征进行识别.结果表明:水稻在不同极化方式上的响应差异比较大,而且水稻在水平极化(HH)和垂直极化(VV)上的差异明显高于其他地物;基于这一特点,利用水平极化和垂直极化的比值〈HH〉/〈VV〉提取水稻信息,取得了较好的效果,水稻识别精度可以达到90%以上;对增强水稻信息的图像进行自动分类,分类结果表明不同生长期的水稻能够得到一定程度的区分.

关 键 词:机载合成孔径雷达  多极化  水稻  识别

Rice information extraction using multi-polarization airborne synthetic aperture radar data
LI Kun,SHAO Yun,ZHANG Feng-li.Rice information extraction using multi-polarization airborne synthetic aperture radar data[J].Journal of Zhejiang University(Agriculture & Life Sciences),2011,37(2).
Authors:LI Kun  SHAO Yun  ZHANG Feng-li
Institution:LI Kun,SHAO Yun,ZHANG Feng-li(Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China)
Abstract:Using multi-polarization(HH/HV/VH/VV) airborne synthetic aperture radar(SAR) data,polarimetric responses of rice and typical features and their differences were analyzed,then rice identification method based on its characteristics of polarimetric response was established.The results showed that backscattering coefficients of rice in different polarizations were of great difference,and the difference between horizontal polarization(HH) and vertical polarization(VV) of rice was significantly higher than other...
Keywords:airborne synthetic aperture radar  multi-polarization  rice  extraction  
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