Diviner红外温度与嫦娥卫星微波探测仪月表亮温的比较分析

发布时间：2018-04-15 03:39

本文选题：亮温模拟 + 嫦娥二号微波探测仪　；参考：《空间科学学报》2014年03期

【摘要】：提出使用高分辨率的Diviner辐射计红外温度作为月壤热传导的边界输入条件,使得月壤物理温度廓线的模拟更接近月表真实情况.利用Diviner物理温度廓线模拟的微波亮温与嫦娥二号卫星微波探测仪(CELMS2)的实测亮温匹配,来分析CELMS2数据的有效性和稳定性,为月壤微波特性的反演奠定基础.以哥白尼坑区域为例,对比分析了Diviner辐射计红外通道温度与CELMS1实测微波亮温的变化趋势.选择月球虹湾地区内一位置点(45.1°-45.5°N,33.1°-33.5°W),分析了CELMS2在该位置点内5个月球时刻的亮温数据.通过对实测亮温与模拟亮温在经纬度和太阳高度角的匹配分析得到,在高频微波通道内两者的相关性达到96%以上,表明嫦娥二号微波探测仪亮温数据具有较高的稳定性,可以为月壤特性反演研究提供可靠数据来源.
[Abstract]:The infrared temperature of high resolution Diviner radiometer is used as the boundary input condition for the thermal conduction of lunar soil, which makes the simulation of the physical temperature profile of lunar soil closer to the real condition of lunar surface.Using the matching between the microwave brightness temperature simulated by Diviner physical temperature profile and the measured brightness temperature of Chang 'e-2 satellite microwave detector CELMS2, the validity and stability of CELMS2 data are analyzed, which lays a foundation for the inversion of microwave characteristics of lunar soil.Taking the Copernicus crater region as an example, the variation trend of infrared channel temperature of Diviner radiometer and microwave brightness temperature measured by CELMS1 is compared and analyzed.A position of 45.1 掳-45.5 掳N ~ (33. 1 掳-33.5 掳W ~ (-1)) in the Rainbow Bay area of the Moon is selected, and the brightness temperature data of five lunar moments in this position by CELMS2 are analyzed.The correlation between the measured brightness temperature and simulated brightness temperature in longitude, latitude and solar altitude angle is over 96% in the high frequency microwave channel, which indicates that the brightness temperature data of Chang 'e-2 microwave detector have high stability.It can provide a reliable data source for the inversion of lunar soil characteristics.
【作者单位】：中国科学院空间科学与应用研究中心中国科学院微波遥感技术重点实验室;中国科学院大学;
【基金】：国家高技术研究发展计划项目资助(2010AA12220405)
【分类号】：P184.5

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