一種強噪聲背景下弱信號檢測的非線性方法
A new detection method of weak signals in strong background-noise level
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摘要: 該文利用隨機共振技術對工程測量中常碰到的弱信號檢測進行了計算機仿真,就信噪比的提高、弱信號的檢測等進行了研究。并對信號經隨機共振系統(tǒng)處理和不經隨機共振系統(tǒng)處理進行檢測比較。實驗結果表明,隨機共振技術完全有可能成為信號檢測中一個強有力的新工具。
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關鍵詞:
- 微弱信號; 檢測; 隨機共振
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,微弱信號檢測方法及儀器,北京,國防工業(yè)出版社,1994,1-23[2]林理忠,宋敏,微弱信號檢測學導論,北京,中國計量出版社,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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