Accuracy analysis of calibration for imaging spectrometer by using diffuser method

ZHANG Chun-lei; XIANG Yang

doi:10.3788/OPE.20111912.2828

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Accuracy analysis of calibration for imaging spectrometer by using diffuser method

Article | 更新时间：2020-08-12

- Accuracy analysis of calibration for imaging spectrometer by using diffuser method
- Optics and Precision Engineering Vol. 19, Issue 12, Pages: 2828-2836(2011)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111912.2828
  CLC： TP73
- Received：08 March 2011，
  
  Revised：15 April 2011，
  
  Published Online：25 December 2011，
  
  Published：25 December 2011
- 稿件说明：
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张春雷, 向阳. 漫反射板法标定成像光谱仪的精度分析[J]. 光学精密工程, 2011,19(12): 2828-2836

ZHANG Chun-lei, XIANG Yang. Accuracy analysis of calibration for imaging spectrometer by using diffuser method[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2828-2836
张春雷, 向阳. 漫反射板法标定成像光谱仪的精度分析[J]. 光学精密工程, 2011,19(12): 2828-2836 DOI： 10.3788/OPE.20111912.2828.

ZHANG Chun-lei, XIANG Yang. Accuracy analysis of calibration for imaging spectrometer by using diffuser method[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2828-2836 DOI： 10.3788/OPE.20111912.2828.

摘要

用漫反射板法标定成像光谱仪时不仅要考虑定标仪器的精度

还要了解成像光谱仪几何参数和仪器参数对标定结果的影响。本文根据漫反射板法标定成像光谱仪原理

推导了以定标角度、距离等几何参数和成像光谱仪仪器参数为自变量的探测器沿景物像元方向采集到的信号电子数变化表达式

据此对几何参数和仪器参数对标定的影响进行了分析。结果表明

/#分别为3和4

入瞳口径为0.1~0.2 m

辐照度标准灯照射距离取0.5~2 m

且其测量精度为1 mm时

只要照射角小于12

满足0.5的测量精度

都可以使探测器采集到的信号电子数相对变化小于1%

从而可发挥标准探测器精度高的优势

使利用漫反射板的定标方法实现较高的精度。

Abstract

The calibration of an imaging spectrometer by using the diffuser method should consider not only the accuracy of calibration instruments

but also the effects of instrument and geometric parameters from the imaging spectrometer on calibration results. According to the calibration principle of imaging spectrometer using the diffuser method

this paper deduces the expression of the collected signal electron number in each spectral channel of the imaging spectrometer by taking the parameters as self-variables

and it analyzes the effects of the incident angle of standard lamp

the distance of standard lamp to the diffuser

the slit direction and the observation incident angle of the imaging spectrometer on the electron number collected by the detector pixels. The results show that when the

number is set to be 3 and 4

the entrance pupil in 0.1-0.2 m

the standard lamp illuminating angle less than 12 and the distance of the standard lamp in 0.5-2 m

the change of the signal electron number can be less than 1%.It satisfies the accuracy need of the calibration by using the diffuser method.

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Keywords

references

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