High-order nonlinear response correction method for infrared radiation detector

doi:10.7498/aps.70.20201530

	High-order nonlinear response correction method for infrared radiation detector
	Sun Yong-Feng 1,2; Xu Liang 1; Shen Xian-Chun 1; Jin Ling 1; Xu Han-Yang 1; Cheng Xiao-Xiao 1,2; Wang Yu-Hao 1,2; Liu Wen-Qing 1; Liu Jian-Guo 1
刊名	ACTA PHYSICA SINICA
	2021-03-20
卷号	70
关键词	remote sensing infrared spectrometer high-order nonlinearity response gradient descent method
ISSN号	1000-3290
DOI	10.7498/aps.70.20201530
通讯作者	Xu Liang(xuliang@aiofm.ac.cn)
英文摘要	The infrared detector can generate nonlinear response error when the Fourier transform infrared spectrometer is used for implementing the radiometric calibration or observing the high temperature targets. Based on the relationship between the incident radiation intensity and the electron concentration in the optical conduction band, the mechanism of the nonlinear response error caused by the high incident photon flow is analyzed. According to Planck radiation law and interference principle, the effect of nonlinear error on spectrum is studied by simulating blackbody radiation data with nonlinear error. It is found that the nonlinear response with a different order has a different influence region, and the higher-order nonlinear response has a wider influence range and generates a larger nonlinear response error. By the general nonlinear response correction method the nonlinear response coefficient is obtained through constructing the nonlinear response model of the interference data and then the spectral distortion produced by the detector is corrected. According to the convolution iteration method, the polar orbit meteorological satellite CrIS constructs the convolution equation to correct the second-order nonlinear response by taking the low-wave number band of 50-500 cm(-1) as the characteristic region. The European Meteorological Agency's Airborne Infrared Interferometer Evaluation System (ARIES) selected two feature areas, 50-500 cm(-1) and 2000-2500 cm(-1), and iteratively corrected the second-order and third-order nonlinear response. The gradient descent method is often used to solve the optimization problems of unconstrained multivariate functions. Based on the gradient descent algorithm, an iterative method suitable for correcting the high-order nonlinear response errors is proposed in this paper. In this method, the information about the iteration point is obtained by constructing the nonlinear response function of the high-order detector and setting the appropriate iteration initialization. According to the initial value of the iteration and the information about the known iteration point, the gradient of the iteration variable is calculated to determine the iteration value of the next unknown variable, thus quickly searching for the global minimum point and determining the nonlinear response coefficient. We use Fourier transform infrared spectrometer to carry out radiometric calibration experiment and compare the effects of three correction methods: convolution, cross iteration and gradient descent method. The results show that the three correction methods can effectively reduce the nonlinear error, and improve the fitting extent by 0.15%, 0.29% and 0.39% respectively. The spectral data corrected by gradient descent method are more accurate.
资助项目	Key Research Program of Frontier Sciences of Chinese Academy of Sciences, China[QYZDY-SSW-DQC016] ; Key R&D Plan of Anhui Province, China[1804d08020300] ; National Natural Science Foundation of China[41941011] ; National Key R&D Program of China[2016YFC0201002] ; National Key R&D Program of China[2016YFC0803001-08]
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000631862800003
资助机构	Key Research Program of Frontier Sciences of Chinese Academy of Sciences, China ; Key R&D Plan of Anhui Province, China ; National Natural Science Foundation of China ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121150]
专题	中国科学院合肥物质科学研究院
通讯作者	Xu Liang
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Sun Yong-Feng,Xu Liang,Shen Xian-Chun,et al. High-order nonlinear response correction method for infrared radiation detector[J]. ACTA PHYSICA SINICA,2021,70.
APA	Sun Yong-Feng.,Xu Liang.,Shen Xian-Chun.,Jin Ling.,Xu Han-Yang.,...&Liu Jian-Guo.(2021).High-order nonlinear response correction method for infrared radiation detector.ACTA PHYSICA SINICA,70.
MLA	Sun Yong-Feng,et al."High-order nonlinear response correction method for infrared radiation detector".ACTA PHYSICA SINICA 70(2021).