基于Hapke辐射传输模型的月壤光谱模拟
发布时间：2018-09-12 18:28
【摘要】：由于月球采样点较少,月壤真实数据稀缺,限制了对月球科学问题的进一步研究。较全面系统地采集月壤样品在近期很难完成,开展月壤光谱模拟工作是月壤实测光谱的必要有益补充,可以为研究月壤光谱特征提供大量数据。基于Hapke模型,我们选取RELAB光谱库的斜长石、单斜辉石、斜方辉石、橄榄石、单质铁、钛铁矿、火山玻璃、熔融玻璃等典型月壤矿物,运用牛顿插值和最小二乘优化的方法,模拟了LSCC月壤数据的一定粒径、单质铁含量、观测条件及矿物混合比例下的混合光谱。模拟光谱与实测光谱拟合较好,相关系数均大于0.99,均方根误差在10~(-3)数量级;模拟矿物丰度与实测矿物丰度基本一致;模拟SMFe含量与相对成熟度指数Is/FeO线性关系明显;模拟粒径基本落在实测粒径组范围内。最后,文中讨论了光谱吸收中心波长、吸收面积等光谱特征参数的模拟精度,以及高精度模拟光谱时光学常数的计算方法。
[Abstract]:Due to the lack of lunar sampling sites and the scarcity of real data of lunar soil, further research on lunar science is limited. It is very difficult to collect lunar soil samples comprehensively and systematically in the near future. It is a necessary supplement to carry out the spectral simulation of lunar soil, which can provide a large amount of data for the study of the spectral characteristics of lunar soil. Based on the Hapke model, we select plagioclase, clinopyroxene, orthopyroxene, olivine, simple iron, ilmenite, volcanic glass, molten glass and other typical lunar soil minerals from the RELAB spectral library. The mixing spectra of LSCC lunar soil under certain particle size, iron content, observation conditions and mineral mixing ratio were simulated. The simulated spectra fit well with the measured spectra, the correlation coefficient is greater than 0.99, the root mean square error is in the order of 10 ~ (-3), the simulated mineral abundance is basically consistent with the measured mineral abundance, and the simulated SMFe content is linearly related to the relative maturity index (Is/FeO). The simulated particle size basically falls within the range of the measured particle size group. Finally, the simulation accuracy of spectral characteristic parameters, such as absorption center wavelength and absorption area, and the calculation method of optical constants are discussed.
【作者单位】： 中国地质大学(北京)地球科学与资源学院;中国国土资源航空物探遥感中心;
【基金】：国家自然科学基金项目(41102208) 中国地质调查局项目“天山—北山重要成矿区带遥感调查”(121201003000150008);中国地质调查局项目“地质勘查遥感系统集成与综合应用示范”(1212011120226)
【分类号】：P184.5
[Abstract]:Due to the lack of lunar sampling sites and the scarcity of real data of lunar soil, further research on lunar science is limited. It is very difficult to collect lunar soil samples comprehensively and systematically in the near future. It is a necessary supplement to carry out the spectral simulation of lunar soil, which can provide a large amount of data for the study of the spectral characteristics of lunar soil. Based on the Hapke model, we select plagioclase, clinopyroxene, orthopyroxene, olivine, simple iron, ilmenite, volcanic glass, molten glass and other typical lunar soil minerals from the RELAB spectral library. The mixing spectra of LSCC lunar soil under certain particle size, iron content, observation conditions and mineral mixing ratio were simulated. The simulated spectra fit well with the measured spectra, the correlation coefficient is greater than 0.99, the root mean square error is in the order of 10 ~ (-3), the simulated mineral abundance is basically consistent with the measured mineral abundance, and the simulated SMFe content is linearly related to the relative maturity index (Is/FeO). The simulated particle size basically falls within the range of the measured particle size group. Finally, the simulation accuracy of spectral characteristic parameters, such as absorption center wavelength and absorption area, and the calculation method of optical constants are discussed.
【作者单位】： 中国地质大学(北京)地球科学与资源学院;中国国土资源航空物探遥感中心;
【基金】：国家自然科学基金项目(41102208) 中国地质调查局项目“天山—北山重要成矿区带遥感调查”(121201003000150008);中国地质调查局项目“地质勘查遥感系统集成与综合应用示范”(1212011120226)
【分类号】：P184.5
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相关期刊论文 前1条
1 闫柏琨;陈伟涛;王润生;杨苏明;孙卫东;陈建明;;基于Hapke模型的矿物红外发射光谱随粒度与发射角的变异规律[J];地球科学(中国地质大学学报);2009年06期
【共引文献】
相关期刊论文 前4条
1 赵哲;周萍;闫柏琨;王U，
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