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Investigation on unexpected variations of differential phase delay of Chang'E-3
He, Qingbao1; Liu, Kaijun1; Ye, Shengyi1; Liu, Qinghui2; Deng, Tao2
2021-11-15
Source PublicationADVANCES IN SPACE RESEARCH
ISSN0273-1177
Volume68Issue:10Pages:4088-4099
AbstractThe Chinese lunar spacecraft Chang'E-3 (CE3) was launched on December 1, 2013, and it kept transmitting differential one-way range (DOR) signals during the whole mission. Differential phase delays calculated from those DOR signals are examined. An interesting phenomenon is that differential phase delays of different frequency pairs change in similar patterns before CE30s landing on the Moon, whereas they change differently after the landing. Moreover, differential phase delays and signals' power experience sudden and large-amplitude variations from time to time. Our analysis shows that, before the landing, signal reflection mainly happened on the spacecraft surface while CE3 was moving in space. Thus, the delay of reflected signals was a few nanoseconds with amplitude variation much larger than 0.12 ns, causing differential phase delays to vary in similar patterns. However, after CE30s landing, reflected signals from lunar sur-face were received by ground stations when CE3 was sitting still on the Moon. Accordingly, the delay of reflected signals was more than 20 ns and with amplitude variation within a few tens of picoseconds, causing differential phase delays to change in different patterns. Further investigation reveals that those sudden, large-amplitude variations in differential phase delays and signals' power were caused by CE3 maneuvers and onboard device movements. (C) 2021 COSPAR. Published by Elsevier B.V. All rights reserved.
KeywordDifferential One-way Range (DOR) Reflection Attitude change Differential phase delay Power
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation
DOI10.1016/j.asr.2021.07.025
WOS KeywordRELATIVE POSITION ; LANDER ; ROVER
Language英语
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; NSFC[41974168] ; Shenzhen Science and Technology Program[JCYJ20190809153407516] ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation[2021M691442]
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; NSFC ; NSFC ; Shenzhen Science and Technology Program ; Shenzhen Science and Technology Program ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation ; Center for Computational Science and Engineering of Southern University of Science and Technology and China Postdoctoral Science Foundation
WOS Research AreaEngineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS SubjectEngineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS IDWOS:000706707100001
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/74837
Collection中国科学院国家天文台
Corresponding AuthorLiu, Kaijun
Affiliation1.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
He, Qingbao,Liu, Kaijun,Ye, Shengyi,et al. Investigation on unexpected variations of differential phase delay of Chang'E-3[J]. ADVANCES IN SPACE RESEARCH,2021,68(10):4088-4099.
APA He, Qingbao,Liu, Kaijun,Ye, Shengyi,Liu, Qinghui,&Deng, Tao.(2021).Investigation on unexpected variations of differential phase delay of Chang'E-3.ADVANCES IN SPACE RESEARCH,68(10),4088-4099.
MLA He, Qingbao,et al."Investigation on unexpected variations of differential phase delay of Chang'E-3".ADVANCES IN SPACE RESEARCH 68.10(2021):4088-4099.
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