干旱区生态环境知识资源中心(Arid): MODIS Reflective Solar Bands On-Orbit Calibration and Performance

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DOI	10.1109/TGRS.2019.2905792
	MODIS Reflective Solar Bands On-Orbit Calibration and Performance
	Xiong, Xiaoxiong 1; Angal, Amit 2; Twedt, Kevin A.2; Chen, Hongda 2; Link, Daniel 2; Geng, Xu 2; Aldoretta, Emily 2; Mu, Qiaozhen 2
通讯作者	Angal, Amit
来源期刊	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN	0196-2892
EISSN	1558-0644
出版年	2019
卷号	57 期号:9 页码:6355-6371
英文摘要	The design of the Moderate-Resolution Imaging Spectroradiometer (MODIS) instrument was driven by the scientific community's desire to have near-daily global coverage at moderate resolution (similar to 1 km) with comprehensive spectral coverage from visible to long-wave infrared wavelengths. Since their launches in 1999 and 2002, respectively, the Terra and Aqua MODIS instruments have made continuous global observations and generated numerous data products to help users worldwide with their studies of the Earth's system and its short- and long-term changes. The 20 reflective solar bands (RSBs) with wavelengths from 0.41 to 2.2 mu m collect data at three nadir spatial resolutions: 250 m, 500 m, and 1 km. The solar diffuser (SD) coupled with the SD stability monitor (SDSM) provides a reflectance-based calibration on-orbit. In addition, lunar observations and response trends from pseudoinvariant desert sites are used to characterize the response versus scan-angle changes on-orbit. This paper provides a brief overview of MODIS RSB calibration algorithms, as implemented in the latest Level 1B version 6.1, operational activities, on-orbit performance, remaining challenges, and potential improvements. Results from the SD and SDSM measurements show a wavelength and mirror-side-dependent degradation in RSB responses, with the largest degradation at the shortest wavelengths, particularly for Terra MODIS. Aqua MODIS has experienced far less degradation of its optics and on-board calibrators compared with Terra MODIS, resulting in an overall better performance. With the exception of Aqua band 6, there have been no new noisy or inoperable detectors in the RSB of either instrument during postlaunch operations. As the instruments age and continue to endure the space environment, the detectors and the optical systems degrade. The challenges associated with incorporating these on-orbit changes to ensure a production of high-quality calibrated L1B data products are also discussed in this paper.
英文关键词	Aqua calibration detector Moderate-Resolution Imaging Spectroradiometer (MODIS) moon reflective solar bands (RSBs) solar diffuser (SD) SD stability monitor (SDSM) Terra uncertainty
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000484209000007
WOS关键词	RESOLUTION IMAGING SPECTRORADIOMETER ; SCAN-ANGLE CHARACTERIZATION ; RADIOMETRIC STABILITY ; CROSS CALIBRATION ; DESERT SITES ; AQUA ; INSTRUMENT ; SYSTEMS ; EARTH
WOS类目	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216254
作者单位	1.NASA Goddard Space Flight Ctr, Sci & Explorat Directorate, Greenbelt, MD 20771 USA; 2.Sci Syst & Applicat Inc, Lanham, MD 20706 USA
推荐引用方式 GB/T 7714	Xiong, Xiaoxiong,Angal, Amit,Twedt, Kevin A.,et al. MODIS Reflective Solar Bands On-Orbit Calibration and Performance[J],2019,57(9):6355-6371.
APA	Xiong, Xiaoxiong.,Angal, Amit.,Twedt, Kevin A..,Chen, Hongda.,Link, Daniel.,...&Mu, Qiaozhen.(2019).MODIS Reflective Solar Bands On-Orbit Calibration and Performance.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,57(9),6355-6371.
MLA	Xiong, Xiaoxiong,et al."MODIS Reflective Solar Bands On-Orbit Calibration and Performance".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 57.9(2019):6355-6371.