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-  2014 

厚度对月壤微波辐射亮温的影响

DOI: 10.11821/dlyj201406002

Keywords: 月壤厚度,CELMS 数据,辐射传输方程,数值模拟

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Abstract:

摘要: 基于嫦娥系列卫星微波辐射计数据的月壤厚度反演是中国月球科学研究的重要目标之一。基于辐射传输方程,数值模拟了不同频率、(FeO+TiO2)含量和表面温度条件下厚度对月壤微波辐射亮温的影响;基于嫦娥二号卫星微波辐射计(Chang’E Lunar Microwave Sounder,CELMS)数据,结合Apollo 计划获取的月壤厚度资料及其他月壤厚度资料,系统分析了厚度对CELMS观测数据的影响。结果表明:频率、(FeO+TiO2)含量、表面温度对亮温的影响远大于厚度对亮温的影响,是基于CELMS数据进行月壤厚度反演的重要影响因素;低频、低(FeO+TiO2)含量、低温条件下,厚度对CELMS数据的影响最大;利用3 GHz、凌晨时刻的CELMS数据进行月陆地区月壤厚度反演可行。研究结果对基于嫦娥系列卫星CELMS数据的月壤厚度反演具有重要参考意义

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