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The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China's Tianwen-1 Mission
Fan, Mingyi1; Lyu, Peng1; Su, Yan2,3; Du, Kui1; Zhang, Qichun1; Zhang, Zhen1; Dai, Shun2; Hong, Tiansheng2
2021-01-06
Source PublicationSPACE SCIENCE REVIEWS
ISSN0038-6308
Volume217Issue:1Pages:17
AbstractChina launched Tianwen-1 spacecraft successfully on July 23rd, 2020. The Mars Orbiter Subsurface Investigation Radar (MOSIR) is a subsurface radar sounder as a scientific instrument onboard Tianwen-1 orbiter. It is designed to study the compositions of Martian surface material, subsurface structure, and the ionosphere's total electron content. It can also perform passive observations in a transfer orbit to Mars. The subsurface stratigraphic structure is critical to the study on Mars geological and climatic evolution history. Considering the optimal tradeoff between penetrating depth and range resolution, MOSIR operates at low-frequency and high-frequency channels, with the frequency bands of 10-15 MHz or 15-20 MHz and 30-50 MHz, respectively. MOSIR provides a penetration depth of more than 100 m with a vertical resolution of 7.5 m (20 MHz bandwidth) and 30 m (5 MHz bandwidth) in free space. The range and azimuth focusing techniques are applied in ground data processing to achieve the resolution of several hundred meters (along-track) and several thousand meters (cross-track). MOSIR is intended to search for water ice and liquid water that may be associated with signs of life in the polar layered deposits, Tianwen-1 landing site, and other selected areas.
KeywordRadar sounder Subsurface structure Mars Orbiter Subsurface Investigation Radar (MOSIR) Tianwen-1 spacecraft Stratigraphic structure
Funding OrganizationChina National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1007/s11214-020-00786-4
Language英语
Funding ProjectChina National Space Administration ; National Natural Science Foundation of China[12073048]
Funding OrganizationChina National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China National Space Administration ; China National Space Administration ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000608023100001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79807
Collection中国科学院国家天文台
Corresponding AuthorLyu, Peng; Su, Yan
Affiliation1.China Elect Technol Grp Corp, Res Inst 38, Hefei 230088, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Lunar & Deep Space Explorat, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Fan, Mingyi,Lyu, Peng,Su, Yan,et al. The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China's Tianwen-1 Mission[J]. SPACE SCIENCE REVIEWS,2021,217(1):17.
APA Fan, Mingyi.,Lyu, Peng.,Su, Yan.,Du, Kui.,Zhang, Qichun.,...&Hong, Tiansheng.(2021).The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China's Tianwen-1 Mission.SPACE SCIENCE REVIEWS,217(1),17.
MLA Fan, Mingyi,et al."The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China's Tianwen-1 Mission".SPACE SCIENCE REVIEWS 217.1(2021):17.
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