空间科学学报2025，Vol.45Issue(2)：328-339,12.DOI:10.11728/cjss2025.02.2024-0153
基于Apollo月壤样品二向反射测量数据的光度学分析
Photometric Analysis of Lunar Regolith Based on the Bidirectional Reflectance Data of Apollo Samples
摘要
Abstract
To provide a parametric basis for photometric correction or spectral unmixing of lunar sur-face spectral data,as well as to understand the physical properties of the lunar soil,it is essential to comprehensively investigate the light scattering characteristics of lunar soil under various observational angles.The Hapke model is widely used for photometric analysis of the lunar surface.However,the de-rived photometric parameters of the lunar soil often exhibit discrepancies.These discrepancies arise from the varying combinations of model parameters selected in different studies,which hinders direct compar-ative analysis.To better understand the photometric properties of the lunar soil,this paper conducted photometric analysis using the Hapke model with various parameter combinations,based on the bidirec-tional reflectance data from six distinct Apollo lunar soil samples.This approach enabled the acquisition of photometric parameters for both mare and highland lunar soils.Additionally,a comparison was made between the applicability of the two-term Legendre phase function and the Henyey-Greenstein phase function in lunar soil photometric analysis,as well as between the three-parameter and five-parameter Hapke models.The results indicate that the highland lunar soils exhibit more backscattering than the mare lunar soils for both the 5-parameter and 3-parameter Hapke model.The 5-parameter Hapke model outperforms the 3-parameter Hapke model in describing the scattering properties of lunar soil across varying observing angles,particularly for spectral data measured at identical phase angles but different emission angles.The 5-parameter Hapke model includes the additional parameters of porosity factor and photometric roughness,compared to the 3-parameter Hapke model,which incorporates the single-scatter-ing albedo and two phase function parameters.The derived photometric roughness,ranging from 17.4°to 24.6°,may serve as a reference lower limit for photometric analysis of the lunar surface.The analytical results presented in this paper can serve as a reference for model selection and subsequent interpretation in the processing of lunar soil spectral data.关键词
月壤光度/相函数/光度参数/观测几何/Hapke模型Key words
Regolith photometry/Phase function/Photometric parameters/Observing geometry/Hapke model分类
天文学引用本文复制引用
谷亚亚,杨亚洲,刘建忠,张莉..基于Apollo月壤样品二向反射测量数据的光度学分析[J].空间科学学报,2025,45(2):328-339,12.基金项目
中国科学院重点部署科研专项(KGFZD-145-23-15-3),中国地质调查局地质调查项目(DD20230007,DD20221645),黔科合重大专项(字[2024]016),中国科协青年人才托举工程项目(2021QNRC001)和国家自然科学基金项目 (42441804)共同资助 （KGFZD-145-23-15-3）
