| 变步长随机共振的微弱周期信号检测 |
| |
| 引用本文： | 向林,李健.变步长随机共振的微弱周期信号检测[J].四川理工学院学报(自然科学版),2011,24(5):548-551. |
| |
| 作者姓名： | 向林 李健 |
| |
| 作者单位： | 四川大学,成都,610065 |
| |
| 基金项目： | 四川省应用基础研究项目，西南交通大学信息编码与传输四川省重点实验室开放研究基金 |
| |
| 摘 要： | 在以朗之万方程建立的随机共振数学模型中,现有文献在求解该数学模型时都将计算步长取固定值,文章通过理论分析说明了固定步长的缺陷,提出了调节计算步长的检测方法。以双稳态随机共振系统为基础,把计算步长作为可调参数来讨论其对随机共振的影响,结果表明调节计算步长能有效地提高被检测信号的检测率。
|
| 关 键 词： | 变步长随机共振 计算步长h 检测率 双稳系统 |
Detection of Weak Periodical Signal Based on Step Varying Stochastic Resonance |
| |
| XIANG Ling,LI Jian.Detection of Weak Periodical Signal Based on Step Varying Stochastic Resonance[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2011,24(5):548-551. |
| |
| Authors: | XIANG Ling LI Jian |
| |
| Institution: | (Sichuan University,Chengdu 610064,China) |
| |
| Abstract: | In now available literatures,the way of fixing the calculation step-value is adopted when solving the stochastic resonance mathmatical model based on Langevin Equation.The defect of fixing the calculation step-value is indicated through theoretical analysis,and the method of adjusting the calculation step-value is proposed consequently.On the basis of the bistable stochastic resonance system,the influence of varying calculation step-value to the effect of stochastic resonance is discussed,the results show that the detection rate of the signal can be effectively improved by regulating step-value. |
| |
| Keywords: | stochastic resonance calculation step-value h detection rate bistable system |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
