| 脉冲噪声环境下基于相关熵的多径TDOA估计算法 |
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| 引用本文： | 李森,王基福,林彬.脉冲噪声环境下基于相关熵的多径TDOA估计算法[J].电子与信息学报,2021,43(2):289-295. |
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| 作者姓名： | 李森 王基福 林彬 |
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| 作者单位： | 大连海事大学信息科学技术学院 大连 116026 |
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| 基金项目： | 国家自然科学基金(61971083)，中央高校基本科研业务费(3132019341) |
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| 摘 要： | 为了实现脉冲噪声环境下不受相关法分辨极限限制的高分辨率多径到达时差(TDOA)估计，该文利用相关熵理论中的最大相关熵准则(MCC)，结合将多维优化问题转化为多个1维优化问题的期望最大化方法，提出一种相关熵期望最大化(CEM)高分辨率多径TDOA估计算法。仿真实验结果表明该文所提出的算法在强脉冲噪声和低信噪比的环境下都具有很好的估计性能，并且算法中参数的选取不依赖于脉冲噪声的先验信息。
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| 关 键 词： | 多径TDOA估计 期望最大化算法 α-稳定分布 最大相关熵准则 |
| 收稿时间： | 2020-05-08 |
A Multipath TDOA Estimation Algorithm Based on Correntropy under Impulsive Noise Environment |
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| Sen LI,Jifu WANG,Bin LIN.A Multipath TDOA Estimation Algorithm Based on Correntropy under Impulsive Noise Environment[J].Journal of Electronics & Information Technology,2021,43(2):289-295. |
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| Authors: | Sen LI Jifu WANG Bin LIN |
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| Affiliation: | College of Information Science Technology, Dalian Maritime University, Dalian 116026, China |
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| Abstract: | In order to realize the high-resolution multipath Time Difference Of Arrival (TDOA) estimation which is not limited by the resolution limit of correlation method under impulsive noise environment, a Correntropy Expectation-Maximum (CEM) high resolution multipath TDOA estimation algorithm is proposed based on the Maximum Correntropy Criterion (MCC). The multipath TDOA is estimated by transforming multi-dimensional optimization problems into multiple one-dimensional optimization problems. The simulation results show that the CEM algorithm has good estimation performance under strong impulsive noise and low SNR environment, and the selection of kernel size in CEM algorithm is not depend on the prior information of the impulsive noise. |
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