| 一种基于分数低阶协方差的维纳加权时间延迟估计方法 |
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| 引用本文： | 孙永梅,邱天爽.一种基于分数低阶协方差的维纳加权时间延迟估计方法[J].大连理工大学学报,2004,44(3):459-463. |
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| 作者姓名： | 孙永梅 邱天爽 |
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| 作者单位： | 大连理工大学,电子与信息工程学院,辽宁,大连 116024;大连理工大学,电子与信息工程学院,辽宁,大连 116024 |
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| 基金项目： | 国家自然科学基金资助项目(30170259,60372081)，辽宁省科学技术基金资助项目(2001101057). |
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| 摘 要： | 依据分数低阶统计量理论和信号噪声特性，提出了一种基于分数低阶协方差的维纳加权(FLOC—WP)时间延迟估计的新方法．这种方法将常规的维纳加权广义时间延迟估计方法与分数低阶协方差结合起来，理论分析和计算机仿真结果表明其既可以应用于高斯噪声环境，又在低阶α稳定分布噪声环境下具有良好的鲁棒性．
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| 关 键 词： | 分数低阶协方差 α稳定分布 时间延迟 维纳加权 |
| 文章编号： | 1000-8608(2004)03-0459-05 |
An estimation method for fractional lower-order covariance based Wiener weighted time delay |
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| SUNYong-mei,QIUTian-shuang.An estimation method for fractional lower-order covariance based Wiener weighted time delay[J].Journal of Dalian University of Technology,2004,44(3):459-463. |
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| Authors: | SUNYong-mei QIUTian-shuang |
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| Institution: | SUNYong-mei,QIUTian-shuang~* |
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| Abstract: | According to the theory of the fractional lower-order statistics and the characteristics of signals and noises, a new estimation method for Wiener weighted time delay based on the fractional lower-order covariance is proposed. This method combines the traditional Wiener weighted time delay estimation with the fractional lower-order covariance. Theoretic analyses and the computer simulations indicate that the new method is not only suitable for gaussian noise conditions, but also very robust under the lower-order stable distribution noise conditions. |
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