摘要
对一台进口的微光像增强器信噪比 (SNR)测试仪进行了改造 ,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立叶变换 (FFT)相结合的方法实现了像增强器信噪比测试。利用研制的测试仪对多种型号的像增强器的信噪比进行了测试 ,给出并分析了测试结果。
A imported signal to noise ratio(SNR)tester for LLL image intensifiers is reconstructed.The signal processing modulel,computer module and measurement software of the tester are redeveloped.The measurement of SNR of image intensifiers is achieved by integrating Fast Fouier Transform(FFT)with hardware filter and digital filter.The improved tester is used to measure the SNR of the image intensifiers.The results are given and analyzed.
出处
《真空科学与技术》
CSCD
北大核心
2002年第5期389-391,共3页
Vacuum Science and Technology
基金
国防重点预研项目资助课题 (No .40 40 5 0 5 0 1D)
