A reflectance calibration method for Multispectral Camera (MSCam) on the Zhurong rover

doi:10.1016/j.icarus.2022.115208

	A reflectance calibration method for Multispectral Camera (MSCam) on the Zhurong rover
	Zhang, Qing 1,3; Liu, Dawei 3; Liu, Jianjun 1,3; Guo, Lin 1,3; Xue, Bin 4; Yang, Jianfeng 4; Yang, Benyong 2; Wang, Xing 1,3; Huang, Hai 1,3; Liu, Bin 3
刊名	ICARUS
	2022-11-15
卷号	387
关键词	Mars Reflectance Multispectral Camera Calibration target
ISSN号	0019-1035
DOI	10.1016/j.icarus.2022.115208
通讯作者	Liu, Jianjun(liujj@nao.cas.cn)
英文摘要	The Multispectral Camera (MSCam) onboard the Zhurong rover, collecting eight band images in the visible and near-infrared wavelengths, aims to investigate the morphological characteristics and mineralogic properties of the Martian surface. Due to the perturbation of Martian atmosphere, accurate reflectance calibration for the MSCam data is crucial for the further spectral interpretation. Here, we proposed a reflectance calibration method to convert the MSCam radiance to reflectance factor using the MSCam calibration target. This study begins with the laboratory multi-angle measurements to characterize the photometric properties of the MSCam calibration target. Based on these photometric characteristics, a reflectance model consisting of a directional reflection term and a specular reflection term is developed. The constructed reflectance model achieves a high precision, the root mean square errors (RMSEs) between the modeled and measured reflectance factor are <1.5% and the determination coefficients (R2) are >99.3% in all cases. We then applied this reflectance model to the in-flight observations to derive the reflectance of the Martian surface. The validations indicate that the in-flight derived reflectance factors of the calibration target are consistent with the laboratory measurements, and the derived reflectance spectra of the Martian surface are comparable to the spectra captured by the other mission.
资助项目	Key Research Program of Chinese Academy of Sciences[ZDBS-SSW-TLC001] ; National Natural Science Foundation of China[41875042] ; Application System (GRAS) of China's Lunar and Planetary Exploration Program
WOS关键词	MARS ; PARAMETERS ; PRODUCTS ; MODEL ; DUST
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000862710500002
资助机构	Key Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Application System (GRAS) of China's Lunar and Planetary Exploration Program
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129137]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Jianjun
作者单位	1.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Calibrat & Characterizat, Hefei, Peoples R China 3.Chinese Acad Sci, Key Lab Lunar & Deep Space Explorat, Natl Astron Observ, Beijing, Peoples R China 4.Chinese Acad Sci, Lunar & Deep Space Explorat Technol Lab Xian Inst, Xian, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qing,Liu, Dawei,Liu, Jianjun,et al. A reflectance calibration method for Multispectral Camera (MSCam) on the Zhurong rover[J]. ICARUS,2022,387.
APA	Zhang, Qing.,Liu, Dawei.,Liu, Jianjun.,Guo, Lin.,Xue, Bin.,...&Ren, Xin.(2022).A reflectance calibration method for Multispectral Camera (MSCam) on the Zhurong rover.ICARUS,387.
MLA	Zhang, Qing,et al."A reflectance calibration method for Multispectral Camera (MSCam) on the Zhurong rover".ICARUS 387(2022).