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Journal of Applied Remote Sensing • new

Development and characterization of Carbon Observing Satellite
Author(s): Hang Zhang; Chao Lin; Yuquan Zheng; Wenquan Wang; Longfei Tian; Dongbin Liu; Shuai Li
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Paper Abstract

Carbon Observing Satellite (Tan-Sat) is the first satellite of China designed to monitor column-averaged atmospheric carbon dioxide (XCO2) by detecting gas absorption spectra of the solar shortwave infrared radiation reflected from the Earth’s surface and atmosphere. Two instruments are accommodated on Tan-Sat: the high resolution hyperspectral sensor for carbon observation grating spectrometer (HRHS-GS) and the cloud and aerosol polarimetric imager (CAPI). HRHS-GS will provide the space-based measurements of CO2 on a scale and with the accuracy and precision to quantify terrestrial sources and sinks of CO2. CAPI is used to identify the contamination by optically thick clouds and to minimize the impact of scattering by aerosol. These two instruments work together to collect global column CO2 concentrations with correction for cloud and aerosol contamination. The instrument design of HRHS-GS is presented. Ocean reflectivity and the incident radiation of the instrument for transverse electric and transverse magnetic polarizations in glint mode are discussed. The changes to glint mode operation are described. The spectral characteristics of HRHS-GS were determined through the laser-based spectral calibration. The onboard spectral calibration method based on spectrum matching is introduced. The availability was verified, satisfying the onboard spectral calibration accuracy requirement of better than Δλ/10 (Δλ is spectral resolution).

Paper Details

Date Published: 27 May 2016
PDF: 19 pages
J. Appl. Remote Sens. 10(2) 024003 doi: 10.1117/1.JRS.10.024003
Published in: Journal of Applied Remote Sensing Volume 10, Issue 2
Show Author Affiliations
Hang Zhang, Jilin Univ. (China)
Changchun Institute of Optics, Fine Mechanics and Physics (China)
Chao Lin, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yuquan Zheng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Wenquan Wang, Jilin Univ. (China)
Longfei Tian, Shanghai Engineering Ctr. for Microsatellites (China)
Dongbin Liu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Shuai Li, Changchun Institute of Optics, Fine Mechanics and Physics (China)

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