基于空间光调制器的光谱可调光源定标

大气与环境光学学报 ›› 2014, Vol. 9 ›› Issue (6): 457-463.

基于空间光调制器的光谱可调光源定标

陆俊桦, 翟文超, 郑小兵

（中国科学院安徽光学精密机械研究所中科院通用光学定标与表征技术重点实验室，安徽合肥 230031）

收稿日期:2014-03-17 修回日期:2014-04-08 发布日期:2014-11-14
通讯作者: 陆俊桦(1989-)，男，江苏启东人，研究生，主要从事光学辐射定标技术研究。 E-mail:lujunhua1989@126.com
作者简介:陆俊桦(1989-)，男，江苏启东人，研究生，主要从事光学辐射定标技术研究。
基金资助:
国家自然科学基金（61275173）资助

Calibration of Spectrally Tunable Source Based on Spatial Light Modulator

LU Jun-hua, ZHAI Wen-chao, ZHENG Xiao-bing

（Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China）

Received:2014-03-17 Revised:2014-04-08 Online:2014-11-14

摘要/Abstract

摘要：

基于空间光调制器的光谱可调光源是一种新型的定标光源，旨在实现定标光源与观测场景光谱匹配的定标新模式，进一步提高光谱定标和辐射定标精度。针对空间光调制器非光敏的特点以及这种新型光源特殊的工作模式，采用“激光光源+光谱仪”进行了光谱预定标和光谱精细定标，采用“标准灯-参考板+光谱仪”进行了辐射定标，实现了对该光源系统470~945 nm范围的光谱及辐射定标。不确定度分析结果表明，波长定标的不确定度优于0.2 nm，辐射定标的不确定度优于3.1%（k=1）。

关键词: 空间光调制器, 光谱可调光源, 光谱定标, 辐射定标

Abstract:

The spectrally tunable source based on spatial light modulator (SLM) is a novel source applying to remote sensor calibration, which aimed at achieving a new calibration model about spectral matching between calibration source and observed scene to further improve spectral and radiometric calibration accuracy. According to the non-photoconductive characteristic of the digital micromirror device and the special operating modes of the source, a spectral calibration scheme based on laser wavelengths and field spectroradiometer was adopted for coarse and precise spectral calibration, and a temporary radiometric calibration method based on lamp-plaque system and field spectroradiometer was adopted. Whereafter, this source was calibrated at 470~945 nm band spectrally and radiometrically. The uncertainty analysis showed that the accuracy of spectral calibration was better than 0.2 nm, and the combined radiometric calibration uncertainty was less than 3.1 % (k=1).

Key words: spatial light modulator, spectrally tunable source, spectral calibration, radiometric calibration

中图分类号:

TP731

陆俊桦翟文超郑小兵. 基于空间光调制器的光谱可调光源定标[J]. 大气与环境光学学报, 2014, 9(6): 457-463.

LU Jun-Hua, ZHAI Wen-Chao, ZHENG Xiao-Bing. Calibration of Spectrally Tunable Source Based on Spatial Light Modulator[J]. Journal of Atmospheric and Environmental Optics, 2014, 9(6): 457-463.

参考文献

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