| 一种新的参数估计方法及其在混沌信号盲分离中的应用 |
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| 引用本文： | 王世元,冯久超.一种新的参数估计方法及其在混沌信号盲分离中的应用[J].物理学报,2012,61(17):170508-170508. |
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| 作者姓名： | 王世元 冯久超 |
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| 作者单位： | 1. 西南大学电子信息工程学院,重庆,400715
2. 华南理工大学电子与信息学院,广州,510641 |
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| 基金项目： | 国家自然科学基金(批准号: 61101232, 60872123, U0835001)和西南大学博士基金(批准号: SWU111027)资助的课题. |
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| 摘 要： | 为了有效地估计非线性映射中的参数,本文采用一种容积准则近似该映射的加权积分函数. 基于由状态空间模型建模的参数,提出了一种新的参数估计方法. 混沌信号的盲分离是一种具有挑战性的参数估计问题.将新的参数估计方法应用在该问题上, 实现混沌信号的有效重构.仿真结果表明该算法具有较快的收敛速度和较高的数值精度, 并能有效地分离原始混沌信号.
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| 关 键 词： | 参数估计 容积准则 盲分离 混沌信号 |
| 收稿时间： | 2011-12-14 |
A novel method of estimating parameter and its application to blind separation of chaotic signals |
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| Wang Shi-Yuan,Feng Jiu-Chao.A novel method of estimating parameter and its application to blind separation of chaotic signals[J].Acta Physica Sinica,2012,61(17):170508-170508. |
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| Authors: | Wang Shi-Yuan Feng Jiu-Chao |
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| Institution: | 1. School of Electronic and Information Engineering, Southwest University, Chongqing 400715, China;2. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, China |
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| Abstract: | To estimate effectively parameters of nonlinear mapping, a cubature rule is used to approximate the weighted integral of this mapping. In this paper, based on these parameters modeled by a state-space model, a novel parameter estimation is proposed. Blind separation of chaotic signals is a challenging problem. The proposed method is used to solve this problem to achieve the effective reconstruction of chaotic signals. Simulation results indicate that the proposed method has a faster convergence speed and a higher numerical accuracy, and can effectively separate original chaotic signals. |
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| Keywords: | parameter estimation cubature rule blind separation chaotic signal |
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