Note: On-line weak signal detection via adaptive stochastic resonance

Siliang Lu; Qingbo He; Fanrang Kong

doi:10.1063/1.4884715

Note: On-line weak signal detection via adaptive stochastic resonance

Rev Sci Instrum. 2014 Jun;85(6):066111. doi: 10.1063/1.4884715.

Authors

Siliang Lu¹, Qingbo He¹, Fanrang Kong¹

Affiliation

¹ Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China.

PMID: 24985875
DOI: 10.1063/1.4884715

Abstract

We design an instrument with a novel embedded adaptive stochastic resonance (SR) algorithm that consists of a SR module and a digital zero crossing detection module for on-line weak signal detection in digital signal processing applications. The two modules are responsible for noise filtering and adaptive parameter configuration, respectively. The on-line weak signal detection can be stably achieved in seconds. The prototype instrument exhibits an advance of 20 dB averaged signal-to-noise ratio and 5 times averaged adjust R-square as compared to the input noisy signal, in considering different driving frequencies and noise levels.