红外超光谱干涉光谱仪探测器高阶非线性响应研究

HFCAS OpenIR

	红外超光谱干涉光谱仪探测器高阶非线性响应研究
其他题名	High Order Nonlinearity Responses of Detector of Infrared Hyperspectral Interferometric Spectrometer
	2018
发表期刊	光学学报
ISSN	0253-2239
摘要	针对红外超光谱干涉光谱仪的技术特点,分析其探测器非线性响应的形成机理,仿真含有高阶非线性误差的干涉数据,并研究二、三阶非线性响应对光谱的影响;提出一种迭代方法,即通过交叉迭代使光谱带外畸变最小,从而确定校正系数进而校正非线性响应;通过获取不同温度黑体观测的干涉数据,用交叉迭代法校正实测数据并复原光谱,将未吸收波数光谱响应与黑体辐亮度进行拟合。结果表明：二阶非线性响应主要影响带外数据,三阶非线性响应主要影响带内数据,仅校正二阶非线性响应时,光谱带内数据仍会有残留误差;交叉迭代法可以校正探测器的非线性响应,且三阶非线性校正的精度比二阶的提高了约7.26%;校正后的拟合优度比校正前的提高了约0.4%,校正后的干涉数据更准确。
其他摘要	In consideration of technical characteristics of the infrared hyperspectral interferometric spectrometer,we analyze the formation mechanism of nonlinear responses of its detector.The influences of second-order and thirdorder nonlinear responses on spectra are studied by means of simulating interference data with high-order nonlinear errors.An iterative method is proposed to minimize the out-of-band distortion by cross-iteration,thus the correction coefficient is determined to correct the non-linear responses.The interference data observed by the blackbody at different temperatures are corrected by the cross-iteration method,and then the spectra are recovered.The spectral response of the undisturbed wavenumber is fitted to the blackbody radiance.The results show that the second-order nonlinearity response has a major impact on the out-of-band data,while the third-order nonlinearity response mainly affects the in-band data.So the in-band data will still have residual errors when only the second-order nonlinear response is corrected.The cross-iterative method can correct the nonlinear response of the detector,and the accuracy produced by the third-order nonlinearity correction is improved about 7.26%compared to the second-order correction.The corrected goodness of fit is improved by about 0.4%,and the corrected interference data are more accurate than before.
关键词	探测器遥感非线性响应交叉迭代红外超光谱校正
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6268506
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/58678
专题	中国科学院合肥物质科学研究院
推荐引用方式 GB/T 7714	. 红外超光谱干涉光谱仪探测器高阶非线性响应研究[J]. 光学学报,2018,038.
APA	(2018).红外超光谱干涉光谱仪探测器高阶非线性响应研究.光学学报,038.
MLA	"红外超光谱干涉光谱仪探测器高阶非线性响应研究".光学学报 038(2018).