嫦娥二号卫星微波探测仪数据定标和处理结果

发布时间：2018-07-03 01:29

  本文选题：嫦娥二号 + 微波探测仪　； 参考：《地球科学(中国地质大学学报)》2013年04期

【摘要】：介绍了嫦娥二号(CE-2)与嫦娥一号(CE-1)搭载的微波探测仪(microwave radiometer,MRM)的不同之处,给出其亮度温度的算法和地面定标系数,并得到CE-2MRM获得的全月亮度温度分布图.分析了亮温的数据规律,并以此为基础归一化后比较了二者之间的数据差异.最后比较了不同取值的非线性系数对CE-2MRM亮温定标结果产生的影响.结果表明:目前CE-2MRM数据在3GHz、19.35GHz和37GHz频率符合地基观测结果的范围,同CE-1MRM结果相比在月球低纬度地区(≤50°)差异在11K以内,差异的主要原因是CE-2定标方法的改进以及定标方程中非线性项的引入,而7.8GHz通道的数据异常表明该通道存在系统误差.
[Abstract]:The differences between Chang'e 2 (CE-2) and microwave radiometers (MRM) carried by Chang'e 1 (CE-1) are introduced. The algorithm of luminance temperature and the calibration coefficient of the ground are given, and the monthly luminance temperature distribution chart obtained by CE-2MRM is obtained. The data law of brightness temperature is analyzed, and the difference between them is compared after normalization. Finally, the influence of nonlinear coefficients of different values on the bright temperature calibration results of CE-2MRM is compared. The results show that the current CE-2MRM data at the frequencies of 3GHz ~ 19.35GHz and 37GHz correspond to the range of ground-based observations, and the difference between CE-2MRM data and CE-1MRM data is less than 11K in the lower latitude of the moon (鈮，

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