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嫦娥一号和二号卫星微波探测仪数据的交叉定标与一致性

王雪影 王振占 张德海 姜景山

王雪影, 王振占, 张德海, 姜景山. 嫦娥一号和二号卫星微波探测仪数据的交叉定标与一致性[J]. 空间科学学报, 2021, 41(4): 635-647. doi: 10.11728/cjss2021.04.635
引用本文: 王雪影, 王振占, 张德海, 姜景山. 嫦娥一号和二号卫星微波探测仪数据的交叉定标与一致性[J]. 空间科学学报, 2021, 41(4): 635-647. doi: 10.11728/cjss2021.04.635
WANG Xueying, WANG Zhenzhan, ZHANG Dehai, JIANG Jingshan. Cross-calibration and Consistency of Microwave Sounder Data of Chang'E-1 and Chang'E-2 Satellites[J]. Journal of Space Science, 2021, 41(4): 635-647. doi: 10.11728/cjss2021.04.635
Citation: WANG Xueying, WANG Zhenzhan, ZHANG Dehai, JIANG Jingshan. Cross-calibration and Consistency of Microwave Sounder Data of Chang'E-1 and Chang'E-2 Satellites[J]. Journal of Space Science, 2021, 41(4): 635-647. doi: 10.11728/cjss2021.04.635

嫦娥一号和二号卫星微波探测仪数据的交叉定标与一致性

doi: 10.11728/cjss2021.04.635
基金项目: 

北京市科技计划空间科学大数据管理与应用服务平台建设课题资助(Z181100002918002)

详细信息
    作者简介:

    王雪影,E-mail:wangxueying18@mails.ucas.ac.cn

    通讯作者:

    王振占,E-mail:wangzhenzhan@mirslab.cn

  • 中图分类号: P122

Cross-calibration and Consistency of Microwave Sounder Data of Chang'E-1 and Chang'E-2 Satellites

  • 摘要: 嫦娥一号(CE-1)和嫦娥二号(CE-2)卫星分别于2007年和2010年发射,其上搭载着相同的微波探测仪(CELMS).由于在轨定标和探测时间不同,两星的CELMS数据存在差异.为了提高数据的一致性,基于月球极区永久阴影区(PSR),利用两步定标法对两星的CELMS数据进行交叉定标和时间校正.通过对不同纬度的亮温进行分析可知:两星的CELMS数据在3GHz,19.35GHz和37GHz通道的一致性良好;在中低纬度区域,CE-2卫星7.8GHz通道的亮温较CE-1卫星高,随着纬度的升高,差异逐渐变小并趋于一致.为避免经度跨度大对亮温的影响,选取云海盆地对交叉定标结果进行定量分析,结果表明两星在该区域的一致性良好,平均误差小于0.2K.由此可知,交叉定标和时间校正明显提高了两次观测数据的一致性,减小了由测量误差和时间变化引起的差异.

     

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出版历程
  • 收稿日期:  2020-01-10
  • 修回日期:  2020-10-28
  • 刊出日期:  2021-07-15

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