基于稳健估计的白桦叶片铜元素含量反演

发布时间：2018-02-27 00:29

  本文关键词： 辐射传输模型 叶片反射率 PROSPECT模型 稳健估计　出处：《武汉大学学报(信息科学版)》2017年05期 　论文类型：期刊论文

【摘要】：根据阔叶叶片模型(a model of leaf optical properties spectra,PROSPECT)叶片辐射传输模型机理,利用一次范数稳健估计估算叶片结构参数N和铜元素的吸收系数kCu。选取黑龙江呼玛地区作为研究区,利用美国ASD公司的FieldSpec 3Hi-Res光谱仪野外测定白桦叶片的反射光谱,实验室测定相应叶片的铜含量,利用改进的PROSPECT-Cu模型进行白桦叶片铜元素含量反演。通过与野外样品测定值和反演值进行比较分析,决定系数为0.963。研究结果表明,反演结果得到的叶片Cu含量是准确的,反演方法是可行的。
[Abstract]:According to the radiation transfer model mechanism of the broadleaved model of leaf optical properties spectraform, the structural parameter N and the absorption coefficient of copper were estimated by using the robust estimation of the primary norm. The Huma area of Heilongjiang Province was selected as the study area. The reflectance spectra of Bai Hua leaves were measured by FieldSpec 3Hi-Res spectrometer of ASD Company in USA, and the copper content of corresponding leaves was measured in laboratory. The improved PROSPECT-Cu model is used to invert the copper content of Bai Hua leaves. The determination coefficient is 0.963 by comparing it with the measured values and inversion values of field samples. The results show that the Cu content of leaves obtained from the inversion results is accurate. The inversion method is feasible.
【作者单位】： 吉林大学地球探测科学与技术学院;武汉大学资源与环境科学学院;
【基金】：国家自然科学基金(41372337,41472243) 数字制图与国土信息应用工程国家测绘地理信息局重点实验室开放基金(GCWD201402) 区域开发与环境响应湖北省重点实验室开放研究基金(2015(B)003)~~
【分类号】：X87
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本文编号：1540367