26 January 2016 Weak signal detection based on the new fractional order bistable system
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Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 99031A (2016) https://doi.org/10.1117/12.2211878
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China
Abstract
Stochastic resonance as a means of signal detection and enhancement, is always based on the general simple bistable system, this research extends the general one into a new complex fractional order bistable system, which is established on the over-damped fractional Langevin equation, the dynamic characteristic of the new system is analyzed by simulation, the generation and enhancement of stochastic resonance as well as its relation with the internal parameters is studied. The system when applied with weak periodic signal and external noise is also researched, we found that the stochastic resonance phenomenon can be generated and improved by changing the fractional order, frequency of input periodic signal and the external noise, the power spectrum of weak signal being detected is boosted thus making it more easily to be detected.
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Yongjun Zheng, Yongjun Zheng, Cong Zhang, Cong Zhang, Zengxian Zhu, Zengxian Zhu, Fei Wang, Fei Wang, } "Weak signal detection based on the new fractional order bistable system", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 99031A (26 January 2016); doi: 10.1117/12.2211878; https://doi.org/10.1117/12.2211878
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