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像增强器噪声频谱特性测试技术研究
引用本文:钱芸生,常本康,童默颖,刘磊.像增强器噪声频谱特性测试技术研究[J].光学学报,2003,23(1):7-70.
作者姓名:钱芸生  常本康  童默颖  刘磊
作者单位:南京理工大学电子工程与光电技术学院,南京,210094
基金项目:国防重点预研项目资助课题
摘    要:对一台进口的像增强器信噪比(SNR)测试仪进行履行,重新研制和设计了测试仪的信号处理模块、计算机系统和测试软件,采用硬件滤波、软件数字滤波和快速傅里叶变换(FFT)相结合的方法实现了像增强器噪声的频谱特性测试。利用所研制的测试仪对多种型号的进口和国产像增强器的噪声频谱进行了测试分析,并给出了分析测试结果。

关 键 词:信号检测  像增强器  频谱特性  信噪比  噪声测试
收稿时间:2002/1/14

Frequency Spectrum Measurement of Noise of Image Intensifiers
Qian Yunsheng,Chang Benkang,Tong Moying,Liu Lei.Frequency Spectrum Measurement of Noise of Image Intensifiers[J].Acta Optica Sinica,2003,23(1):7-70.
Authors:Qian Yunsheng  Chang Benkang  Tong Moying  Liu Lei
Abstract:An imported signal to noise ratio (SNR) measuring system for image intensifiers is reconstructed. The signal processing module, computer module and measurement software of the system are redeveloped. The frequency spectrum measurement of noise of image intensifiers is achieved by integrating Fast Fouier Transform (FFT) with hardware filter and digital filter. The improved system is used to analyze frequency spectra of noise of homemade and imported image intensifiers. The results are given and analyzed.
Keywords:signal detection  image intensifier  frequency spectrum  SNR  noise measurement
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