28 October 2010 Spectral characterization of the Dunhuang calibration/validation site using hyperspectral measurements
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Abstract
There is a great need to establish satellite instrument calibration consistency using vicarious calibration sites with wellknown spectral and radiometric characteristics. The Dunhuang calibration/validation site located in the Gobi desert, China, and the Dome C in the Antarctic are two of the eight reference sites endorsed by the Committee on Earth Observation Satellites (CEOS) Working Group on Cal/Val (WGCV). This paper presents results of the spectral characterization of the Dunhuang calibration/validation site using hyperspectral measurements. Its spectra are compared with those from the Dome C, as well as with ground sample measurements with radiative transfer calculations. Further comparisons are made with the spectra obtained by the HSI on China's HJ-1A environmental satellite. The results show that the Dunhuang and Dome C sites have distinct spectral characteristics that complement each other for satellite instrument calibration in the reflective solar bands. This study is part of the collaboration effort by the CEOS/WGCV towards consistent satellite observations for the global earth observation system of systems (GEOSS).
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Changyong Cao, Changyong Cao, Lingling Ma, Lingling Ma, Sirish Uprety, Sirish Uprety, Chuanrong Li, Chuanrong Li, Lingli Tang, Lingli Tang, } "Spectral characterization of the Dunhuang calibration/validation site using hyperspectral measurements", Proc. SPIE 7862, Earth Observing Missions and Sensors: Development, Implementation, and Characterization, 78620J (28 October 2010); doi: 10.1117/12.869606; https://doi.org/10.1117/12.869606
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