| 脉冲噪声环境下的改进MUSIC谱估计方法 |
| |
| 引用本文： | 孙永梅,赵维,阚园园.脉冲噪声环境下的改进MUSIC谱估计方法[J].大连交通大学学报,2012,33(3):67-72. |
| |
| 作者姓名： | 孙永梅 赵维 阚园园 |
| |
| 作者单位： | 大连交通大学电气信息学院,辽宁大连,116028 |
| |
| 基金项目： | 辽宁省博士启动基金，辽宁省教育厅高等学校科学研究计划资助项目 |
| |
| 摘 要： | 针对传统MUSIC谱估计方法在脉冲噪声环境下的退化现象,依据脉冲噪声特性,基于分数低阶协方差的定义,首先对带噪信号进行非线性处理,然后再计算非线性处理后信号的自相关矩阵,得到改进MUSIC和改进的ROOT-MUSIC谱估计方法.理论分析和仿真结果表明,新方法在高斯噪声和脉冲噪声环境下均具有良好的性能,改进的ROOT-MUSIC谱估计方法在处理短序列信号时性能明显优于改进的MUSIC谱估计方法.
|
| 关 键 词： | 谱估计 改进MUSIC 分数低阶 稳定分布 |
Modified MUSIC Spectrum Estimation Methods Under Impulse Noise Environments |
| |
| SUN Yong-mei
,
ZHAO Wei
,
KAN Yuan-yuan.Modified MUSIC Spectrum Estimation Methods Under Impulse Noise Environments[J].Journal of Dalian Jiaotong University,2012,33(3):67-72. |
| |
| Authors: | SUN Yong-mei ZHAO Wei KAN Yuan-yuan |
| |
| Institution: | (School of Electrical and Information Engineering,Dalian Jiaotong University,Dalian 116028,China) |
| |
| Abstract: | According to the degeneration of traditional MUSIC spectrum estimation method under impulse noise environment,two modified MUSIC spectrum estimation methods with the nonlinear processing are proposed based on the noise characteristic of impulse noises and the fractional lower order moments.Theoretical analysis and simulation results show that these two methods have excellent performance in Gaussian and impulse noise environments.The performance of FLOC-ROOT-MUSIC spectrum estimation method in processing short signals is much better than FLOC-MUSIC spectrum estimation method. |
| |
| Keywords: | spectrum estimation modified MUSIC fractional lower order stable distribution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
