摘要
在随机共振理论基础上,以非线性双稳态系统为研究对象,以强噪声背景下微弱信号检测的实际需要为出发点,探讨基于随机共振的微弱信号检测方法。将该方法用于强噪声背景微弱周期信号检测,理论分析和数值仿真表明,该方法简单、稳健、可靠,验证了在短数据条件下微弱周期信号检测的有效性。
Based on the stochastic resonance（SR） theory,taking a nonlinear bi-stable system as research object,the method of weak signal detection based on SR was discussed for the weak singles need to be detected in a strong background noise.This method was applied to detect the weak frequency component signals in the strong noise background.The theoretical analysis and numerical simulation indicated that this method is simple,robust and reliable.The result showed that the weak sinusoid signal of lower signal-to-noise ratio can be effectively extracted from heavy noise when the data length is short.
出处
《船海工程》
2010年第5期99-101,共3页
Ship & Ocean Engineering
关键词
随机共振
微弱信号检测
数值仿真
stochastic resonance
weak signal detection
numerical simulation
