学术
大孔径静态干涉成像光谱仪的信噪比分析
陈琦[1,2] 杨建峰[2] 乔卫东[2] 薛彬[2] 马小龙[2]
[1]西安文理学院,西安710065 [2]中国科学院西安光学精密机械研究所,西安710119
摘 要:
根据大孔径静态干涉成像光谱仪的原理和特点，分析了光辐射能在光学系统内的传输情况，对探测器上接收到的光辐射能信号和噪音信号做了详细的推导，得到了仪器理论信噪比的表达式．在实验上以大口径积分球为辐射源，采集仪器输出的干涉图像，计算得到仪器的实际信噪比曲线，对大孔径静态干涉成像光谱仪的理论信噪比曲线与实际的信噪比曲线做分析比较，结果验证了用推导的论信噪比的表达式来预估仪器信噪比的可行性．[著者文摘]
文章出处:
《光子学报》-2007年36卷10期 -1889-1892页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1004-4213（2007）10-1889-4
相关文章:
Analysis for Signal-to-noise Ratio of Large aperture static imaging spectroscopy
CHEN Qi, YANG Jian-feng, QIAO Wei-dong , XUE Bin , MA Xiao-long （1. Xi＇an University of Arts and Science ,Xi＇an 710065 ,China;2. Xi＇an Institute of Optics and Precision Mechanics ,Chinese Academy of Sciences ,Xi＇an 710119 ,China）
Abstract:
Based on the principle and characteristic of the aperture static imaging spectroscopy（LASIS）,the transmission of radiant energy in optics system is analyzed, the radiant energy signal and noise signal received by detector are deduced in detail, and by which the expression about SNR of LASIS is given. In experiment,integrating sphere be used as radiant source,collecting image datum,the actual SNR of LASIS is figured out. The results show that the actual SNR curve fit in well with the deduced SNR curve, the feasibility which using the expression of SNR to estimate the SNR of LASIS is validated.[著者文摘]
Key words:
Interference imaging spectrometer ; Signal-to-noise ratio ; Radiant energy; photon noise
基金资助:
国家863高技术研究与发展计划资助
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