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基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究

连懿 何龙 孟治国 平劲松 胡硕 曾晓明

连懿, 何龙, 孟治国, 平劲松, 胡硕, 曾晓明. 基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究[J]. 深空探测学报, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
引用本文: 连懿, 何龙, 孟治国, 平劲松, 胡硕, 曾晓明. 基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究[J]. 深空探测学报, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
LIAN Yi, HE Long, MENG Zhiguo, PING Jingsong, HU Shuo, ZENG Xiaoming. The Research of Temporal and Spatial Distribution of Microwave Brightness Temperature in Chang'E-4 Landing Area Based on Field Theory[J]. Journal of Deep Space Exploration, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
Citation: LIAN Yi, HE Long, MENG Zhiguo, PING Jingsong, HU Shuo, ZENG Xiaoming. The Research of Temporal and Spatial Distribution of Microwave Brightness Temperature in Chang'E-4 Landing Area Based on Field Theory[J]. Journal of Deep Space Exploration, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004

基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究

doi: 10.15982/j.issn.2095-7777.2018.01.004
基金项目: 天津市高等学校科技发展基金计划项目(043135202JW1718);天津师范大学校开发基金(043-135202XK1604);天津师范大学校博士基金(52XB1502)

The Research of Temporal and Spatial Distribution of Microwave Brightness Temperature in Chang'E-4 Landing Area Based on Field Theory

  • 摘要: “嫦娥4号”(Chang’e-4)将首次实现在月球背面软着陆,而着陆区初步定为月球背面南极–艾肯(South Pole-Aitken,SPA)盆地内的冯·卡门(Von Kármán)撞击坑。利用“嫦娥”微波辐射计穿透性强的特点,针对微波辐射亮温缺乏场分析的问题,从场观点出发利用SVD方法分析冯·卡门撞击坑的亮温时空分布特征。结果表明冯·卡门撞击坑的3 GHz昼夜亮温场和37 GHz昼夜亮温场之间存在显著的耦合模态,同时在撞击坑内的亮温变化趋势相对一致;FeO+TiO2(FTA)含量高的区域其相关性较高,也是亮温变化的关键区域,但是其等值线密度和FTA含量没有明显相关关系,主要和月表粗糙度相关。最后通过分析冯·卡门撞击坑的亮温时空分布特征综合地形特征、地层单元和物质化学成分等因素,为Chang’e-4着陆区的选择提供了参考。
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    [21] 陈思,孟治国,张吉栋,等. Tycho撞击坑地区微波热辐射特性研究[J]. 中国科学:物理学力学天文学,2016,46(2):029608.CHEN S,MENG Z G,ZHANG J D,et al. Research on microwave radiation characteristics at Tycho crater area[J]. Scientia Sinica:Physica,Mechanica & Astronomica,2016,46(2):029608.
    [22] FANG T,FA W. High frequency thermal emission from the lunar surface and near surface temperature of the Moon from Chang'E-2 microwave radiometer[J]. Icarus,2014,232:34-53.
    [23] MENG Z G,XU Y,CAI Z C,et al. Influence of lunar topography on simulated surface temperature[J]. Advances in Space Research,2014,54(10):2131-2139.
    [24] ROSENBURG M A,AHARONSON O,HEAD J W,et al. Global surface slopes and roughness of the Moon from the Lunar Orbiter Laser Altimeter[J]. Journal of Geophysical Research Planets,2011,116(E2):1161-1172.
    [25] 严艳梓,汤国安,熊礼阳,等. 基于DEM的月球雨海地区粗糙度研究[J]. 地理研究,2014,33(8):1442-1456.YAN Y Z,TANG G A,XIONG L Y,et al. Lunar surface roughness of Mare Imbrium based on DEMs[J]. Geographical Research,2014,33(8):1442-1456.
  • [1] 徐浩, 裴福俊, 蒋宁.  一种基于李群描述的深空探测器姿态估计方法 . 深空探测学报, 2020, 7(1): 102-108. doi: 10.15982/j.issn.2095-7777.2020.20171117002
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  • 收稿日期:  2017-11-14
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基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究

doi: 10.15982/j.issn.2095-7777.2018.01.004
    基金项目:  天津市高等学校科技发展基金计划项目(043135202JW1718);天津师范大学校开发基金(043-135202XK1604);天津师范大学校博士基金(52XB1502)

摘要: “嫦娥4号”(Chang’e-4)将首次实现在月球背面软着陆,而着陆区初步定为月球背面南极–艾肯(South Pole-Aitken,SPA)盆地内的冯·卡门(Von Kármán)撞击坑。利用“嫦娥”微波辐射计穿透性强的特点,针对微波辐射亮温缺乏场分析的问题,从场观点出发利用SVD方法分析冯·卡门撞击坑的亮温时空分布特征。结果表明冯·卡门撞击坑的3 GHz昼夜亮温场和37 GHz昼夜亮温场之间存在显著的耦合模态,同时在撞击坑内的亮温变化趋势相对一致;FeO+TiO2(FTA)含量高的区域其相关性较高,也是亮温变化的关键区域,但是其等值线密度和FTA含量没有明显相关关系,主要和月表粗糙度相关。最后通过分析冯·卡门撞击坑的亮温时空分布特征综合地形特征、地层单元和物质化学成分等因素,为Chang’e-4着陆区的选择提供了参考。

English Abstract

连懿, 何龙, 孟治国, 平劲松, 胡硕, 曾晓明. 基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究[J]. 深空探测学报, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
引用本文: 连懿, 何龙, 孟治国, 平劲松, 胡硕, 曾晓明. 基于场理论的“嫦娥4号”着陆区亮温时空分布特征研究[J]. 深空探测学报, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
LIAN Yi, HE Long, MENG Zhiguo, PING Jingsong, HU Shuo, ZENG Xiaoming. The Research of Temporal and Spatial Distribution of Microwave Brightness Temperature in Chang'E-4 Landing Area Based on Field Theory[J]. Journal of Deep Space Exploration, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
Citation: LIAN Yi, HE Long, MENG Zhiguo, PING Jingsong, HU Shuo, ZENG Xiaoming. The Research of Temporal and Spatial Distribution of Microwave Brightness Temperature in Chang'E-4 Landing Area Based on Field Theory[J]. Journal of Deep Space Exploration, 2018, 5(1): 27-33. doi: 10.15982/j.issn.2095-7777.2018.01.004
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