High-order nonlinear response correction method for infrared radiation detector
文献类型:期刊论文
作者 | Sun Yong-Feng1,2; Xu Liang2; Shen Xian-Chun2; Jin Ling2; Xu Han-Yang2; Cheng Xiao-Xiao1,2; Wang Yu-Hao1,2; Liu Wen-Qing2; Liu Jian-Guo2 |
刊名 | ACTA PHYSICA SINICA |
出版日期 | 2021-03-20 |
卷号 | 70 |
ISSN号 | 1000-3290 |
关键词 | remote sensing infrared spectrometer high-order nonlinearity response gradient descent method |
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 |
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.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, 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). |
入库方式: OAI收割
来源:合肥物质科学研究院
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