Sensor and Platform Technologies

Development and characterization of Carbon Observing Satellite

[+] Author Affiliations
Hang Zhang

Jilin University, College of Physics, No. 2699 Qianjin Road, Changchun 130012, China

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dong Nanhu Road, Changchun 130033, China

Chao Lin, Yuquan Zheng, Dongbin Liu, Shuai Li

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dong Nanhu Road, Changchun 130033, China

Wenquan Wang

Jilin University, College of Physics, No. 2699 Qianjin Road, Changchun 130012, China

Longfei Tian

Shanghai Engineering Center for Microsatellites, No. 99 Haike Road, Shanghai 201203, China

J. Appl. Remote Sens. 10(2), 024003 (May 27, 2016). doi:10.1117/1.JRS.10.024003
History: Received August 6, 2015; Accepted April 27, 2016
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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

Citation

Hang Zhang ; Chao Lin ; Yuquan Zheng ; Wenquan Wang ; Longfei Tian, et al.
"Development and characterization of Carbon Observing Satellite", J. Appl. Remote Sens. 10(2), 024003 (May 27, 2016). ; http://dx.doi.org/10.1117/1.JRS.10.024003


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