月基观测地球大气层顶辐射特性研究

叶罕霖; 邓玉; 刘广; 郭华东

doi:10.15982/j.issn.2096-9287.2022.20210074

月基观测地球大气层顶辐射特性研究

doi: 10.15982/j.issn.2096-9287.2022.20210074

叶罕霖^{1, 3,},
邓玉^{2, 3},
刘广^3,,
郭华东^{2, 3}

1.
中国空间技术研究院钱学森空间技术实验室，北京 100094
2.
北京大学地球与空间科学学院，北京 100871
3.
中国科学院空天信息创新研究院，北京 100094

基金项目: 中国航天科技集团钱学森青年创新基金资助项目（Y-KC-JT-QXS-014）；国家重点研究开发计划（2020YFE0202100）；国家自然科学基金资助项目（42101413）；中国科学院数字地球重点实验室开放基金资助项目（2019LDE001）

详细信息

作者简介:
叶罕霖（1991– ），男，助理研究员，主要研究方向：地球辐射能量收支的月基观测方法。通讯地址：北京市海淀区邓庄南路9号（100094）电话：（010）82178182E-mail：yehanlin@qxslab.cn

刘广（1979– ），男，博士生导师，教授，主要研究方向：月基对地观测、微波遥感对地观测。本文通讯作者。通讯地址：中国科学院空天信息创新研究院（100094）电话：（010）82178103E-mail：liuguang@radi.ac.cn

●　Single-point observation geometry was used in the Moon-based Earth’s outgoing radiation monitoring. ●　It is proved that the whole Earth’s surface can be monitored within one orbital period. ●　Suggested dynamic range that is from 5.50×10⁻² to 8.50×10⁻² W·m⁻² was obtained. ●　Sampling interval and accumulative sampling period were estimated.
中图分类号: V11

Characteristics Analysis of Moon-Based Monitoring of Earth’s Outgoing Radiation at the Top of Atmosphere

YE Hanlin^{1, 3
,},
DENG Yu^{2, 3},
LIU Guang^3
,,
GUO Huadong^{2, 3}

1.
Qian Xuesen Laboratory of Space Technology，China Academy of Space Technology，Beijing 100094，China
2.
School of Earth and Space Science, Peking University, Beijing 100871, China
3.
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

摘要: 针对月基辐射计参数设计的不确定性，研究了基于月基辐射计观测地球大气层顶的辐射特性。基于月基平台，将地球作为类点状辐射源进行观测，分析了月面不同位置观测特性、观测数据受观测几何影响以及观测采样特性。结果表明：月球是一个变轨道倾角、变观测距离的轨道，一个轨道周期内可以完成对地球全球的充分采样，满足对地球完全时空覆盖观测的条件；在月面中心区域观测获得的大气层顶辐射能量较高；建议的传感器动态范围在5.50×10⁻²~8.50×10⁻² W/m²之间，观测时间采样间隔不大于4 h，累积采样周期为一个轨道周期（27.3 d）。得到的结果为月基辐射计参数设计与观测参数确定提供了重要依据。
- 地球大气层顶辐射 /
- 月基对地观测 /
- 观测几何 /
- 时空采样
Abstract: Due to the uncertainty of parameter design of the Moon-based radiometer, the characteristics of Moon-based Earth’s outgoing radiation at the top of the atmosphere were investigated. Based on the single-point observation geometry for a Moon-based platform, this paper analyzed observational characteristics and data of different Moon-based platforms’ positions on the lunar surface, and the observational sampling characteristics. The results indicate that the orbit of the Moon is with variable orbital inclination and variant observation distances from the Earth, and equipping a radiometer on the lunar surface can sample the whole Earth’s surface within one orbital period. In addition, the suggested dynamic range is from 5.50×10⁻² to 8.50×10⁻² W m⁻², its temporal sampling interval is no more than 4 hours, and the accumulative sampling period is one orbital period (27.3 days). The above results provide an important basis for the design of the Moon-based radiometer.
- Earth’s outgoing radiation at the top of atmosphere /
- Moon-based Earth observations /
- observation geometry /
- temporal sampling
Highlights

●　Single-point observation geometry was used in the Moon-based Earth’s outgoing radiation monitoring. ●　It is proved that the whole Earth’s surface can be monitored within one orbital period. ●　Suggested dynamic range that is from 5.50×10⁻² to 8.50×10⁻² W·m⁻² was obtained. ●　Sampling interval and accumulative sampling period were estimated.
图 1 月球轨道近地点、远地点、最大正轨道倾角和最大负轨道倾角对应位置点

Fig. 1 The perigee, apogee, maximum positive and maximum negative orbital inclination corresponding to the position points of the lunar orbit

下载: 全尺寸图片幻灯片

图 2 月基辐射计在近地点和远地点的观测视场

Fig. 2 Observational scope of a Moon-based sensor when the Moon is at perigee and apogee

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图 3 一个轨道周期的采样分布

Fig. 3 The sampling distribution of an orbital period

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图 4 累积采样均匀度随累积周期的变化

Fig. 4 Variation of cumulative sampling uniformity with cumulative period

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图 5 月面不同位置观测大气层顶辐射能量的影响

Fig. 5 The influence of different positions on the lunar surface on the observation of outgoing radiation at the top of the atmosphere

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图 6 月基辐射计观测大气层顶辐射能量变化趋势

Fig. 6 Variation of Moon-based Earth’s outgoing radiation measurements.

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图 7 月基辐射计观测能量与地月距离的关系

Fig. 7 The relationship between the outgoing radiation observed by the moon-based radiometer and the distance between the Earth and the Moon

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图 8 去除距离影响的大气层顶辐射能量的变化

Fig. 8 Variations in outgoing radiation at the top of the atmosphere without the effect of distance

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图 9 时间采样间隔对大气层顶地球辐射能量观测的影响^[13]

Fig. 9 The effect of time sampling interval on the observation of outgoing radiation at the top of the atmosphere^[13]

下载: 全尺寸图片幻灯片

图 10 不同采样时间间隔下采样不确定性的变化

Fig. 10 Variation of sampling uncertainties at different sampling intervals

下载: 全尺寸图片幻灯片

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注释:

●　Single-point observation geometry was used in the Moon-based Earth’s outgoing radiation monitoring.

●　It is proved that the whole Earth’s surface can be monitored within one orbital period.

●　Suggested dynamic range that is from 5.50×10⁻² to 8.50×10⁻² W·m⁻² was obtained.

●　Sampling interval and accumulative sampling period were estimated.

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月基观测地球大气层顶辐射特性研究

doi: 10.15982/j.issn.2096-9287.2022.20210074

Characteristics Analysis of Moon-Based Monitoring of Earth’s Outgoing Radiation at the Top of Atmosphere

计量

月基观测地球大气层顶辐射特性研究

doi: 10.15982/j.issn.2096-9287.2022.20210074

1. 中国空间技术研究院钱学森空间技术实验室，北京 100094

2. 北京大学地球与空间科学学院，北京 100871

3. 中国科学院空天信息创新研究院，北京 100094

English Abstract

Characteristics Analysis of Moon-Based Monitoring of Earth’s Outgoing Radiation at the Top of Atmosphere

1. Qian Xuesen Laboratory of Space Technology，China Academy of Space Technology，Beijing 100094，China

2. School of Earth and Space Science, Peking University, Beijing 100871, China

3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

目录

留言板

月基观测地球大气层顶辐射特性研究

doi: 10.15982/j.issn.2096-9287.2022.20210074

Characteristics Analysis of Moon-Based Monitoring of Earth’s Outgoing Radiation at the Top of Atmosphere

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出版历程

月基观测地球大气层顶辐射特性研究

doi: 10.15982/j.issn.2096-9287.2022.20210074

1. 中国空间技术研究院 钱学森空间技术实验室，北京 100094 2. 北京大学 地球与空间科学学院，北京 100871 3. 中国科学院 空天信息创新研究院，北京 100094

English Abstract

Characteristics Analysis of Moon-Based Monitoring of Earth’s Outgoing Radiation at the Top of Atmosphere

1. Qian Xuesen Laboratory of Space Technology，China Academy of Space Technology，Beijing 100094，China 2. School of Earth and Space Science, Peking University, Beijing 100871, China 3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

目录

1. 中国空间技术研究院钱学森空间技术实验室，北京 100094

2. 北京大学地球与空间科学学院，北京 100871

3. 中国科学院空天信息创新研究院，北京 100094

1. Qian Xuesen Laboratory of Space Technology，China Academy of Space Technology，Beijing 100094，China

2. School of Earth and Space Science, Peking University, Beijing 100871, China

3. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China