Design and Ground Verification for Multispectral Camera on the Mars Tianwen-1 Rover | |
Yang, Jian-Feng2; Liu, Da-Wei1; Xue, Bin2; Lyu, Juan2; Liu, Jian-Jun1; Li, Fu2; Ren, Xin1; Ge, Wei2; Liu, Bin1; Ma, Xiao-Long2 | |
刊名 | SPACE SCIENCE REVIEWS |
2022-04 | |
卷号 | 218期号:3 |
关键词 | Mars exploration Multispectral camera Calibration Ground test |
ISSN号 | 0038-6308;1572-9672 |
DOI | 10.1007/s11214-022-00886-3 |
产权排序 | 1 |
英文摘要 | As part of China's first Mars exploration mission 'Tianwen-1', the Zhurong rover has successfully touched down on the surface of southern Utopia Planitia on May 15th 2021 and has been conducting surface operations for several months. A multispectral camera (MSCam), as an important payload onboard the Zhurong rover, aims to acquire multispectral images to investigate the morphological characteristics and mineralogic properties of the Martian surface. In this study, a detailed optimization design for the MSCam was carried out to achieve the abovementioned scientific objectives. The MSCam can perform multispectral imaging without chromatic aberration by utilizing eight narrow bandwidth filters made of glass of different thicknesses. Clear images of observation targets at different distances can be obtained by utilizing the six focal plane compensation lenses of varying thicknesses through the rotation of wheels. Calibration experiments, key specification tests and ground verification tests were also conducted in this study. Our results show that the pixel resolution of the MSCam can reach 0.146 mrad, the system static modulation transfer function (MTF) of the MSCam is better than 0.25@525 nm, and the signal-to-noise ratio (SNR) is higher than 40 dB, all of which allow clear imaging and accurate multispectral data acquisition of the targets. The high-resolution images obtained by the MSCam will provide detailed geological context for the data interpretation of other payloads on the rover, such as the Mars surface composition detector (MarSCoDe). The mineralogy information of the targets (e.g., fresh rock, dune) indicated by the MSCam multispectral data will also help to constrain the surface material composition of Mars. |
语种 | 英语 |
出版者 | SPRINGER |
WOS记录号 | WOS:000783539700001 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/95842] |
专题 | 西安光学精密机械研究所_月球与深空探测技术研究室 |
通讯作者 | Lyu, Juan |
作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Lunar & Deep Space Explorat Technol Lab, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Jian-Feng,Liu, Da-Wei,Xue, Bin,et al. Design and Ground Verification for Multispectral Camera on the Mars Tianwen-1 Rover[J]. SPACE SCIENCE REVIEWS,2022,218(3). |
APA | Yang, Jian-Feng.,Liu, Da-Wei.,Xue, Bin.,Lyu, Juan.,Liu, Jian-Jun.,...&Lu, Di.(2022).Design and Ground Verification for Multispectral Camera on the Mars Tianwen-1 Rover.SPACE SCIENCE REVIEWS,218(3). |
MLA | Yang, Jian-Feng,et al."Design and Ground Verification for Multispectral Camera on the Mars Tianwen-1 Rover".SPACE SCIENCE REVIEWS 218.3(2022). |
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