Mars Mineralogical Spectrometer (MMS) on the Tianwen-1 Mission

The Mars Mineralogical Spectrometer (MMS) is a hyperspectral imager onboard the Mars orbiter of Tianwen-1, China’s first Mars exploration mission. MMS consists of 4 subassemblies: an Optical Sensor Unit (OSU), an Electronics Unit (EU), a Calibration Unit (CU), and a Thermal Control Accessories (TCA)...

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Bibliographic Details
Published in:Space science reviews 2021-03, Vol.217 (2), Article 27
Main Authors: He, Zhiping, Xu, Rui, Li, Chunlai, Yuan, Liyin, Liu, Chengyu, Lv, Gang, Jin, Jian, Xie, Jianan, Kong, Chuifeng, Li, Feifei, Chen, Xiaowen, Wang, Rong, Xu, Sheng, Pan, Wei, Wu, Jincai, Li, Changkun, Wang, Tianhong, Jin, Haijun, Chen, Hourui, Qiu, Jun, Wang, Jianyu
Format: Article
Language:English
Subjects:
Aerospace Technology and Astronautics
Astrophysics and Astroparticles
Hyperspectral imaging
Mars
Mars exploration
Mars orbiters
Mars surface
Mineralogy
Optical measuring instruments
Physics
Physics and Astronomy
Pixels
Planetology
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Spatial data
Spectra
Spectral resolution
The Huoxing-1 (HX-1)
Tianwen-1 (TW-1) mission to Mars
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Summary:The Mars Mineralogical Spectrometer (MMS) is a hyperspectral imager onboard the Mars orbiter of Tianwen-1, China’s first Mars exploration mission. MMS consists of 4 subassemblies: an Optical Sensor Unit (OSU), an Electronics Unit (EU), a Calibration Unit (CU), and a Thermal Control Accessories (TCA). With a 0.5 mrad IFOV and a 416-sample cell array for nadir observation, MMS can map the spectral and spatial information of the Martian surface through push-broom scanning, and it can transmit scientific data by hyperspectral mode or multispectral imaging mode through spatial and spectral combination. MMS can perform multi-sample hyperspectral imaging at full spectral resolution (0.379–1.076 μm with 2.73 nm/band, 1.033–3.425 μm at 7.5 nm/band, both spectral ranges at 2.1 km/pixel at 265 km). For the wavelength region of interest, the multispectral mapping mode provides additional options, a subset of 72 bands that are binned to minimum pixel footprints of 265 m/pixel. The major objective of the MMS is to analyze the compositions and distributions of the minerals on Martian surface, in order to characterize its evolution.
ISSN:0038-6308
1572-9672
DOI:10.1007/s11214-021-00804-z