一种强噪声背景下弱信号检测的非线性方法
A new detection method of weak signals in strong background-noise level
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摘要: 该文利用随机共振技术对工程测量中常碰到的弱信号检测进行了计算机仿真,就信噪比的提高、弱信号的检测等进行了研究。并对信号经随机共振系统处理和不经随机共振系统处理进行检测比较。实验结果表明,随机共振技术完全有可能成为信号检测中一个强有力的新工具。
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关键词:
- 微弱信号; 检测; 随机共振
Abstract: In this paper, using the stochastic resonance technique, the detection method of weak signal is simulated, then the increasing of SNR and the detecting of weak signal are investigated. And the signal passing through the stochastic resonator is compared with the original signal. It indicates that the stochastic resonance is fully able to become a strong newtool in signal detection. -
戴逸松,微弱信号检测方法及仪器,北京,国防工业出版社,1994,1-23[2]林理忠,宋敏,微弱信号检测学导论,北京,中国计量出版社,1996,1-204[3]R. Benzi, A. Sutera, A. Vulpiani, The mechanism of stochastic resonance, J. Phys. A, 1981, 14,L453-L457.[4]F. Moss, Stochastic resonance: a signal+ noise in a two state system, Proc. of the 45th Annual Symposium on Frequency control, Los Angeles, CA, USA, 1991, 649-658.[5]F. Chapeau-Blondeau, Input-output gains for signal noise in stochastic resonance. Phys. Lett.,A232, 1997, A232, 41-48. -
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