基于级联双稳随机共振的微弱信号检测方法研究

微弱信号采集、检测与提取是航天测控领域研究的热点之一,学者们不断探索与研究微弱信号检测的新理论、新方法,以期能更快速、更准确地从大噪声背景中检测出微弱信号;文章介绍了随机共振的基本原理,分析了基于随机共振的微弱信号检测和故障诊断的工程实例,进一步指出了随机共振技术在微弱信号的增强放大和检测中的独特优势,为微弱信号的分析和噪声控制提供了一个新的处理思路。

Research on Weak Signal Detection Based on Cascaded Stochastic Bistable Resonance

With the increasing needs of weak signal detection,it has been a research hot spot of aerospace measurement.In order to detect the underlying signals in high levels of noise rapidly and accurately,scholars explore and develop the new theory and methods of weak signal detection.The stochastic resonance(SR) phenomenon is introduced and fundamental mechanism of the SR is analyzed.The means of the SR technology,applied in the areas of signal detection and fault diagnosis,are investigated,considering the practical examples.The application has presented the practicability and effectiveness of this technique,possessing the strong ability in the detection of the weak signals,with the enhancement of the signals’ intensity.Hence it puts forward a novel way of the weak signal processing and noise control.