| 基于水稻高光谱遥感数据的PLS波长选择研究 |
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| 引用本文： | 宋沙磊,李平湘,龚威,汪金平.基于水稻高光谱遥感数据的PLS波长选择研究[J].武汉大学学报(信息科学版),2010(2). |
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| 作者姓名： | 宋沙磊 李平湘 龚威 汪金平 |
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| 作者单位： | 武汉大学测绘遥感信息工程国家重点实验室;华中农业大学农业部华中作物生理生态与栽培重点开放实验室; |
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| 基金项目： | 国家973计划资助项目(2009CB723905); 国家863计划资助项目(2009AA12Z107); 国家自然科学基金资助项目(40871171) |
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| 摘 要： | 对武汉地区不同生长状况下的水稻冠层进行了遥感监测,采用偏最小二乘(PLS)分析方法分别对水稻叶面氮含量、叶绿素含量进行了波长选择研究,并通过构建8种波长组合进行PLS水稻叶面氮含量反演分析和比较,选择出最合适的反演波长。多种波长(波段)组合进行叶面氮含量反演的验证表明,采用552 nm、675 nm7、52 nm7、76 nm的4波长组合是最适合叶面氮含量反演的波长选择结果,同时,采用光谱能量空间变换的形式能较好地改善波长选择的反演效果。
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| 关 键 词： | 高光谱遥感 波长选择 偏最小二乘 水稻 |
PLS Wavelength Selection by Hyperspectral Remote Sensing in Rice |
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| SONG Shalei LI Pingxiang GONG Wei WANG Jinping.PLS Wavelength Selection by Hyperspectral Remote Sensing in Rice[J].Geomatics and Information Science of Wuhan University,2010(2). |
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| Authors: | SONG Shalei LI Pingxiang GONG Wei WANG Jinping |
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| Institution: | SONG Shalei1 LI Pingxiang1 GONG Wei1 WANG Jinping2(1 State Key Laboratory of Information Engineering in Surveying,Mapping , Remote Sensing,Wuhan University,129 Luoyu Road,Wuhan 430079,China)(2 College of Plant Science & Technology,Huazhong Agricultural University,1 Shizishan,Nanhu,Wuhan 430070,China) |
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| Abstract: | The objective of the present research was to identify and select the spectral wavelength with the partial least square(PLS) method for the study of rice.We use PLS method to select the wavelengths which have the largest weightings for rice leaf biochemical concentrations respectively for leaf nitrogen concentration and chloroghyll-a concentration.In order to evaluate the wavelength selection results,we construct eight kinds of wavelength(bands) combinations for rice leaf nitrogen concentration inversion ana... |
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| Keywords: | hyperspectral remote sensing wavelength selection PLS rice |
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