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自适应随机共振算法用于微弱信号检测

自适应随机共振算法用于微弱信号检测

Application of Adaptive Stochastic Resonance Algorithm in Weak Signal Detection

Application of Adaptive Stochastic Resonance Algorithm in Weak Signal Detection

doi:
10.3321/j.issn:0251-0790.2001.05.035
Abstract:
An adaptive algorithm for extracting weak signal based on the theory of stochastic resonance(SR) was proposed. It was implemented by investigating the self-correlation of the outputs of the bistable system(with different μ). The results show that the self-correlation will reach maximum when a sudden change of output occurs, and hence prove that SR is sensitive sharply to the change of the parameters μ, and also provide one novel method to express the outputs which hasnt been solved till now. The adaptive algorithm was also applied to analyze the weak Laser-Raman spectrum of a CCl4 sample(liquid in capillary) which was measured with SPEX-1403 Laser-Raman spectrometer from 250 cm-1 to 418 cm-1 on 5 mW(output power of laser) . The spectrum was analyzed with the adaptive algorithm by varying the data to (-4.13, 3.50) and declining μ from 2.0 with step 0.01. The results obtained show that the adaptive algorithm was able to detect the weak signal automatically and correctly.
作者 王利亚 印春生 蔡文生 潘忠孝
Author: WANG Li-Ya YIN Chun-Sheng CAI Wen-Sheng PAN Zhong-Xiao
作者单位 中国科技大学应用化学系,
期 刊: 高等学校化学学报 ISTIC EI SCI PKU CSSCI
Journal: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES
年,卷(期) 2001, 22(5)
分类号 O437
关键词: 随机共振 知识脉络 微弱信号检测 知识脉络 自适应算法 知识脉络 喇曼光谱 知识脉络
机标分类号 O65 O43
基金项目 国家自然科学基金
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