| 基于二次型变换的Chirp信号的参数估计方法 |
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| 引用本文： | 兰华,李娟,刘冰,王建元,蔡国伟,石要武.基于二次型变换的Chirp信号的参数估计方法[J].电工电能新技术,2005,24(4):1-4,33. |
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| 作者姓名： | 兰华 李娟 刘冰 王建元 蔡国伟 石要武 |
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| 作者单位： | 东北电力学院,吉林省,吉林市,132012;吉林大学,吉林,长春,130000 |
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| 摘 要： | 提出了基于二次型变换的Chirp信号的处理方法.首先将非平稳的Chirp信号经过二次型变换化为平稳信号,得到了该平稳信号的相关函数表达式.再根据该相关函数矩阵的奇异值分解的性质和特点,提出了在有色噪声背景下用于估计Chirp信号参数的互谱SVD方法.仿真实验表明,该方法与Radon-Wigner变换方法所得到的结果相近,证明了该方法的正确性与有效性.
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| 关 键 词： | 信号参数估计 有色噪声 二次型变换 相关函数 |
| 文章编号： | 1003-3076（2005）04-0001-04 |
| 收稿时间： | 2005-04-02 |
| 修稿时间： | 2005-04-02 |
Method for estimating parameters of chirp signal based on quadratic transformation |
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| LAN Hua,LI Juan,LIU Bing,WANG Jian-yuan,CAI Guo-wei,SHI Yao-wu.Method for estimating parameters of chirp signal based on quadratic transformation[J].Advanced Technology of Electrical Engineering and Energy,2005,24(4):1-4,33. |
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| Authors: | LAN Hua LI Juan LIU Bing WANG Jian-yuan CAI Guo-wei SHI Yao-wu |
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| Affiliation: | 1. Northeast China Institute of Electric Power Engineering, Jilin 132012, China; 2. Jinlin University, Changchun 130000, China |
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| Abstract: | Treatment method of chirp signal based on quadratic transformation is proposed. At first non-stationary chirp signal is turned into stationary signal and the correlation functions about this stationary signal is obtained. According to the characteristic of its Singular Value Decomposition, the method of cross-spectrum MUSIC used to estimate the parameters is put forward. The simulation results show the correctness and effectiveness of the proposed method by comparing with the Radon-Wigner method. |
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| Keywords: | estimation of signal parameter colored noise quadratic transformation correlation function |
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