Spectral calibration based on echelle

被引：3

作者：

Mao J.-H. ^{[1
,2
]}

Wang Y.-M. ^{[2
]}

Shi E.-T. ^{[2
]}

Zhang Z.-M. ^{[2
]}

Jiang F. ^{[1
]}

机构：

[1] National Space Science Center, Beijing

[2] University of Chinese Academy of Sciences, Beijing

来源：

Wang, Yong-Mei (wym@nssc.ac.cn) | 1600年 / Editorial Office of Chinese Optics卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Echelle grating; Grating equation; Hyperspectral imaging spectrometer; Spectral calibration;

D O I：

10.3788/CO.20171003.0376

中图分类号：

学科分类号：

摘要：

Spectral calibration is the premise of remote sensing data inversion. Considering the advantages of a large field, wide wavelength range, high spatial and spectral resolution, the spectral calibration equipment based on echelle is built. Working at a higher blazed order with a large blaze angle, the echelle is characterized by a wide spectrum range and high spectral resolution. It can output multiple spectral lines with uniform distribution in the detection band, which overcomes the shortcomings of the traditional calibration methods and improves the calibration accuracy. In our study, the working principle of the spectral calibration equipment is given first. Then using this equipment, the spectral calibration equation of the hyperspectral imaging spectrometer is given accurately by peak-searching and regression analysis. Finally, the calibration results are verified by using the unique characteristics of mercury spectral lines. The experiment results show that there is a approximate linear distribution between pixel and wavelength. The uncertainty of the wavelength calibration is 0.025 8 nm, and the maximum deviation of calibration values and standard deviation values of mercury spectral lines is less than 0.043 5 nm, which can prove the accuracy of the calibration results. © 2017, China Science Publishing & Media LTD. All right reserved.

引用

页码：376 / 382

页数：6

共 15 条

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