全约束线性分解的月表虹湾地区矿物含量反演

发布时间：2018-04-21 21:04

本文选题：月球矿物制图仪(M) + 全约束线性分解　；参考：《国土资源遥感》2016年01期

【摘要】：月表主要矿物含量的定量反演是月球科学领域的重要课题之一,对未来月表矿物信息解译有重要指导意义,因此提出一种对月表高光谱遥感数据线性分解获取矿物含量的方法。首先,利用Hapke辐射传输模型将Relab光谱库中的5种矿物(单斜辉石、斜方辉石、斜长石、橄榄石和钛铁矿)非线性混合的反射光谱转换为线性混合的单次反照率;然后,按照比例随机生成混合像元;最后基于全约束线性光谱分解方法建立上述5种矿物分解含量与真实含量的统计关系模型。利用Apollo登陆采样点实测数据对该模型进行验证的结果表明,辉石、斜长石、橄榄石和钛铁矿的反演结果与实测结果的相关系数分别为0.83,0.86,0.72和0.77。采用上述方法,利用印度探月卫星Chandrayaan-1搭载的月球矿物制图仪(moon mineralogy mapper,M3)高光谱数据得到月表虹湾地区矿物的含量分布图,表明利用全约束线性分解对高光谱矿物识别和含量反演是一种行之有效的方法。
[Abstract]:The quantitative inversion of the main mineral contents of the lunar surface is one of the important topics in the field of lunar science, which is of great significance for the interpretation of the mineral information of the future moon surface. Therefore, a method of linear decomposition of the hyperspectral remote sensing data for obtaining the mineral content is proposed. Firstly, the nonlinear mixing reflectance spectra of five minerals (clinopyroxene, clinopyroxene, plagioclase, olivine and ilmenite) in the Relab spectral library are converted into linear mixed single albedo by Hapke radiative transfer model. The mixed pixel is randomly generated according to the proportion, and the statistical relationship model between the five mineral decomposition contents and the real content is established based on the fully constrained linear spectral decomposition method. The model is verified by using the measured data of Apollo landfall sampling site. The results show that the correlation coefficients between the inversion results of pyroxene, plagioclase, olivine and ilmenite are 0.83U 0.86U 0.72 and 0.77 respectively. Using the above method, using the hyperspectral data of moon mineralogy mappert M3, a lunar mineral cartography carried by the Indian lunar satellite Chandrayaan-1, a map of mineral content distribution in the Rainbow Bay area on the moon surface is obtained. It is shown that the fully constrained linear decomposition is an effective method for hyperspectral mineral identification and content inversion.
【作者单位】：中国地质大学(武汉)遥感科学与技术系;新疆维吾尔自治区测绘科学研究院;中国地质大学(武汉)行星科学研究所;
【基金】：中央高校基本科研业务费专项资金项目“月表虹湾地区岩矿含量信息高精度定量反演模型”(编号:CUGL130261)资助
【分类号】：P184.5

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