【摘要】：由于月球采樣點較少,月壤真實數(shù)據(jù)稀缺,限制了對月球科學問題的進一步研究。較全面系統(tǒng)地采集月壤樣品在近期很難完成,開展月壤光譜模擬工作是月壤實測光譜的必要有益補充,可以為研究月壤光譜特征提供大量數(shù)據(jù)�；贖apke模型,我們選取RELAB光譜庫的斜長石、單斜輝石、斜方輝石、橄欖石、單質(zhì)鐵、鈦鐵礦、火山玻璃、熔融玻璃等典型月壤礦物,運用牛頓插值和最小二乘優(yōu)化的方法,模擬了LSCC月壤數(shù)據(jù)的一定粒徑、單質(zhì)鐵含量、觀測條件及礦物混合比例下的混合光譜。模擬光譜與實測光譜擬合較好,相關系數(shù)均大于0.99,均方根誤差在10~(-3)數(shù)量級;模擬礦物豐度與實測礦物豐度基本一致;模擬SMFe含量與相對成熟度指數(shù)Is/FeO線性關系明顯;模擬粒徑基本落在實測粒徑組范圍內(nèi)。最后,文中討論了光譜吸收中心波長、吸收面積等光譜特征參數(shù)的模擬精度,以及高精度模擬光譜時光學常數(shù)的計算方法。
[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.
【作者單位】： 中國地質(zhì)大學(北京)地球科學與資源學院;中國國土資源航空物探遙感中心;
【基金】：國家自然科學基金項目(41102208) 中國地質(zhì)調(diào)查局項目“天山—北山重要成礦區(qū)帶遙感調(diào)查”(121201003000150008);中國地質(zhì)調(diào)查局項目“地質(zhì)勘查遙感系統(tǒng)集成與綜合應用示范”(1212011120226)
【分類號】：P184.5

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本文編號：2239874