| 提取混沌中微弱信号的正交局部投影方法 |
| |
| 引用本文： | 何丽桥,王国光,王丹.提取混沌中微弱信号的正交局部投影方法[J].吉林大学学报(工学版),2008,38(4):950-954. |
| |
| 作者姓名： | 何丽桥 王国光 王丹 |
| |
| 作者单位： | 1. 吉林大学,物理学院,长春,130012
2. 吉林大学,通信工程学院,长春,130022 |
| |
| 摘 要： | 改进了降低混沌中噪声的局部投影方法,建立了正交局部投影算法,根据混沌的确定性特征,提出了预测性邻点选取方法和参数选择法则。这种方法成功地应用于提取Henon混沌中的微弱信号,在信噪比不低于-80 dB的条件下,能够准确提取信号信息。数值实验表明,该方法具有高度的稳定性和可靠性,是提取混沌中微弱信号的有效方法。
|
| 关 键 词： | 信息处理技术 信号提取 正交局部投影 混沌 |
| 收稿时间： | 2007-03-17 |
| 修稿时间： | 2007-09-06 |
Orthognal local projective method for weak signal extraction in chaos |
| |
| HE Li-qiao,WANG Guo-guang,WANG Dan.Orthognal local projective method for weak signal extraction in chaos[J].Journal of Jilin University:Eng and Technol Ed,2008,38(4):950-954. |
| |
| Authors: | HE Li-qiao WANG Guo-guang WANG Dan |
| |
| Affiliation: | 1.College of Physics, Jilin University, Changchun 130012, China; 2.College of Communication Engineering, Jilin University, Changchun 130022, China |
| |
| Abstract: | An orthogonal local projective algorithm was derived by improving local projective method on noise reduction in chaotic time series. According to the deterministic character of chaos, a predictive approach of neighborhood selection was presented and rules of parameter selection was proposed,which can extract weak signal in Henon chaos at SNR=-80 dB. Simulation results verified that the method has higher stability and reliability and is effective in weak signal extraction in chaos. |
| |
| Keywords: | information processing extraction of signals orthogonal local projection chaos |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《吉林大学学报(工学版)》浏览原始摘要信息 |
|
点击此处可从《吉林大学学报(工学版)》下载全文 |
|
