基于随机共振原理的自适应信号检测技术研究

Adaptive Signal Detection Based on Stochastic Resonance Principle

强噪声背景下提取微弱信号是信号处理技术中倍受关注的课题。该文应用随机共振对微弱信号检测的原理,在研究了双稳态非线性系统的基础上,设计了非线性系统以及其控制电路。通过模拟工程实际,提出了简单的自适应算法,验证其对于微弱信号检测的有效性。

This paper introduce the basic principle of stochastic resonance(SR) in weak signal detection from a heavy noise background.Based on this principle, adaptive detection technology has been studied.We research how to control the nonlinear bistable system to obtain SR phenomenon,and then,design the nonlinear system circuit and control system circuit.Considering the factual status in engineering,a simple adaptive algorithm is stated.The experiment results testify this algorithm is effective.