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《Acta Optica Sinica》 2003-01
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Frequency Spectrum Measurement of Noise of Image Intensifiers

Qian Yunsheng Chang Benkang Tong Moying Liu Lei(School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094)(Received 14 January 2002; revised 8 April 2002)  
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.
【Fund】: 国防重点预研项目资助课题
【CateGory Index】: TN144
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