中文摘要：

月表太空风化会改变月壤光谱特征,影响月壤元素遥感反演精度.研究太空风化对月壤光谱的影响有助于开发月壤成熟度光谱解耦算法,提高月壤成分遥感反演精度.直接对比月壤风化前后光谱的变化能最真实反映太空风化对光谱的影响,但无法获取未风化的月壤样品,利用实验室模拟方法开展研究也存在缺陷.本文提出了一种简便的方法来研究太空风化对月壤光谱的影响,并以月海样品为例进行探讨.利用Hapke模型对月海样品组成矿物光谱按照实测含量进行非线性混合,并通过对比混合后的光谱与实测的月壤光谱,研究太空风化过程对月壤光谱的影响.研究结果表明,月壤在遭受太空风化后反射率降低,波长越短降低越显著;月壤背景吸收斜率增大,月壤变得更红,月壤矿物特征吸收峰深度降低,光谱对比度变弱,长波吸收峰（2.0μm附近）深度降低程度超过短波吸收峰（1.0μm附近）深度.未来在利用遥感技术反演月壤元素含量时,必须考虑这些因素.

英文摘要：

The reflectance spectrum of lunar soil is mainly dominated by its composition and the degree of exposure to space weathering processes such as micrometeorite bombardment and solar wind implantation.The spectral alteration effects of space weathering should be removed for accurately investigating the composition of the lunar surface using remote sensing data.It can contribute to develop the method for decoupling the spectral effects of composition and maturity to improve the inversion accuracy by exploring the optical effects of space weathering on lunar regolith.Because unweathered soil is hard to acquire,it＇s unable to compare the spectra between the weathered and unweathered soil directly.This paper provided a simple way to investigate the optical effects of space weathering.First,the mixed spectra is acquired according to the mineral contents and spectra measured from the lunar soil using the Hapke model.Then the modeled spectra of lunar soil were compared with the real spectra measured by Brown University.Investigation results showed that the space weathering can reduce the overall reflectance of lunar soil,and the shorter waveband the greater reducing;that it can increase the continuum slope to the spectrum,which makes the spectra redder; and it can also reduce the absorption depth and spectral contrast,and the absorption peak near 2.0μm was reduced more than that near 1.0μm.These factors should be taken into consideration when the element contents are retrieved using remote sensing technology.