摘要
随机共振作为一种新颖的信号处理手段在各个领域得到了广泛应用,但对低频微弱信号来说,单随机共振系统有时不能很好地将它们提取出来.该文介绍了级联随机共振系统的实现,用模拟电路的形式对其进行了表述,并基于此构成嵌入式变尺度级联随机共振系统.系统硬件采用片上系统作为MCU,软件建立在实时操作系统基础上,给出了软件的整体架构和变尺度随机共振算法的实现流程,系统因而性能更加稳定.最后给出了应用实例,验证了该系统可以更好地从被噪声污染的信号中识别出较弱的有用信号.
Stochastic resonance is a novel signal processing method which has been applied in some areas, but single stochastic resonance systems sometimes cannot extract features from weak, low frequency signals. A concatenated stochastic resonance circuit was formulated, and based on it, a scale transformation concatenation stochastic resonance system was proposed. The hardware of the system was a system on a chip （SOC） and the software of the system was a real-time operating system. This made the system more stable. Details of the software and the flow for scale transformation stochastic resonance were analyzed. An example showed the accuracy of the scale transformation concatenated stochastic resonance system.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2009年第11期1279-1284,共6页
Journal of Harbin Engineering University
基金
国家863计划资助项目(2007AA04Z414)
国家自然科学基金资助项目(50435040)
关键词
随机共振
变尺度随机共振
级联
片上系统
实时操作系统
scale transformation
stochastic resonance
concatenation
system on chip
real-time operation system
