Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer

doi:10.1016/j.sna.2019.04.034

CIOMP OpenIR

	Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer
	H.Zhang; Y.Q.Zheng; S.Li; C.Lin; C.L.Li; J.Z.Yuan; Y.Li
	2019
发表期刊	Sensors and Actuators a-Physical
ISSN	0924-4247
卷号	293 页码:62-69
摘要	Carbon Observing Satellite (TanSat) is the first of Chinese experimental satellite for monitoring the CO2 column densities in the atmospheric, while identifying sources and sinks on regions scales. Three grating spectrometers are equipped on TanSat to measure the reflected sunlight in the 0.76 mu m O2A-band, 1.61 mu m weak CO2 band and 2.06 mu m strong CO2 band respectively. Three bands have high spectral resolution and signal to noise ratio (SNR), while their spectral and radiometric calibration have been reported in many articles. This paper describes the geometric calibration of the essential payload (ACGS) on the TanSat. In the assembly process, the flatness only in the spatial dimension is strictly controlled owing to the physical obstruction. The geometric deflection error in one band should be tested and corrected by adjusting the starting rows of different spectral samplings. Meanwhile, the alignment error among the three bands also need processing in the same way to ensure that the slits of the three bands were matched the corresponding geographic target. Finally, the geometric correction results of the thermal-vacuum testing suggested that the alignment accuracy is well enough to match the requirements. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Geometric correction,Centroid position,Deflection error,spectral calibration,optical-system,design,Engineering,Instruments & Instrumentation
DOI	10.1016/j.sna.2019.04.034
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62816
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H.Zhang,Y.Q.Zheng,S.Li,et al. Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer[J]. Sensors and Actuators a-Physical,2019,293:62-69.
APA	H.Zhang.,Y.Q.Zheng.,S.Li.,C.Lin.,C.L.Li.,...&Y.Li.(2019).Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer.Sensors and Actuators a-Physical,293,62-69.
MLA	H.Zhang,et al."Geometric correction for TanSat atmospheric carbon dioxide grating spectrometer".Sensors and Actuators a-Physical 293(2019):62-69.

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