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The Earth 2.0 space mission analysis and spacecraft design
Chen Wen1; Chen Kun1; Yang Yingquan1; Han Xingbo1; Bi Xingzi1; He Tao1; Duan Xuliang1; Huang Jiangjiang1; Liang Hong1; Zhang Kuoxiang1; Wang Haoyu1; Liu Liu1; He Junwang1; Qin Genjian1; Li Jinsong1; Wang Tian1; Ge Jian2; Zhang Hui2; Zhang Yongshuai2; Zhou Dan2; Zhang Congcong2; Tang Zhenghong2; Yu Yong2; Zang Weicheng3; Mao Shude3; Chen Yonghe4; Liu Xiaohua4; Song Zongxie5; Gao Wei5; Zhang Hongfei6; Wang Jian6
2022
会议名称Conference on Space Telescopes and Instrumentation - Optical, Infrared, and Millimeter Wave
会议录名称SPACE TELESCOPES AND INSTRUMENTATION 2022: OPTICAL, INFRARED, AND MILLIMETER WAVE
卷号12180
会议日期2022-07-17
会议地点Montreal, CANADA
出版者SPIE-INT SOC OPTICAL ENGINEERING
产权排序5
摘要

The Earth 2.0 (ET) mission is a Chinese next-generation space mission to detect thousands of Earth-sized terrestrial planets, including habitable Earth-like planets orbiting solar type stars (Earth 2.0s), cold low-mass planets, and free-floating planets. To meet the scientific goals, the ET spacecraft will carry six 30 cm diameter transit telescopes with each field of view of 500 square degrees, and one 35 cm diameter microlensing telescope with a field of view of 4 square degrees, monitor similar to 1.2M FGKM dwarfs in the original Kepler field and its neighboring fields continuously while monitoring over 30M stars in the Galactic bulge direction. The high precision transit observations require high photometry precision and pointing stability, which is the key drive for the ET spacecraft design. In this paper, details of the overall mission modeling and analysis will be presented. The spacecraft orbit, pointing strategy, stability requirements are presented, as well as the space-ground communication analysis. The ET spacecraft adopts an ultra-high photometry precision & high stable platform, largely inherited from other space science missions. The preliminary design of spacecraft which meets mission requirements is introduced, including the spacecraft overall configuration, observation modes, avionics architecture and development plan, which pays great attention to the pointing stability and huge volume science telemetry download.

关键词Earth 2.0 mission analysis spacecraft design high stability high photometry precision
作者部门空间光学技术研究室
DOI10.1117/12.2629697
收录类别CPCI
ISBN号978-1-5106-5342-9
语种英语
ISSN号0277-786X;1996-756X
WOS记录号WOS:000865466600036
引用统计
文献类型会议论文
条目标识符http://ir.opt.ac.cn/handle/181661/96227
专题空间光学技术研究室
通讯作者Chen Wen
作者单位1.Chinese Acad Sci, Innovat Acad Microsatellites, 99 Haike Rd, Shanghai, Peoples R China
2.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai, Peoples R China
3.Qsinghua Univ, Qsinghua Pk, Beijing, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Tech Phys, 500 Yutian Rd, Shanghai, Peoples R China
5.Chinese Acad Sci, XiAn Inst Opt & Precis Mech, 17 Xinxi Rd, Xian, Peoples R China
6.Univ Sci & Technol China, 96 Jinzhai Rd, Hefei, Peoples R China
推荐引用方式
GB/T 7714
Chen Wen,Chen Kun,Yang Yingquan,et al. The Earth 2.0 space mission analysis and spacecraft design[C]:SPIE-INT SOC OPTICAL ENGINEERING,2022.
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