27 May 2016 Development and characterization of Carbon Observing Satellite
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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).
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hang Zhang, Hang Zhang, Chao Lin, Chao Lin, Yuquan Zheng, Yuquan Zheng, Wenquan Wang, Wenquan Wang, Longfei Tian, Longfei Tian, Dongbin Liu, Dongbin Liu, Shuai Li, Shuai Li, } "Development and characterization of Carbon Observing Satellite," Journal of Applied Remote Sensing 10(2), 024003 (27 May 2016). https://doi.org/10.1117/1.JRS.10.024003 . Submission:
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