刘浩1,
张家成1,
李景春2,
李蓉2
1.大连理工大学电子信息与电气工程学部 大连 116024
2.国家无线电监测中心 北京 100037
基金项目:国家自然科学基金(61671105, 61172108)
详细信息
作者简介:邱天爽:男,1954年生,博士,教授,主要研究方向为非高斯非平稳信号处理、数字信号处理
刘浩:男,1996年生,硕士生,主要研究方向为阵列信号处理、非高斯非平稳信号处理
张家成:男,1993年生,博士生,主要研究方向为阵列信号处理、非高斯非平稳信号处理
李景春:男,1966年生,博士,教授级高级工程师,主要研究方向为无线电监测理论与应用等
李蓉:女,1984年生,博士,高级工程师,研究方向为认知无线电与数字信号处理等
通讯作者:邱天爽 qiutsh@dlut.edu.cn
中图分类号:TN911.7计量
文章访问数:470
HTML全文浏览量:177
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被引次数:0
出版历程
收稿日期:2020-03-03
修回日期:2020-08-25
网络出版日期:2020-11-19
刊出日期:2021-02-23
An Improved Time Delay Estimation Method Based on Generalized Cyclic Correntropy
Tianshuang QIU1,,,Hao LIU1,
Jiacheng ZHANG1,
Jingchun LI2,
Rong LI2
1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
2. State Radio Monitoring Center, Beijing 100037, China
Funds:The National Natural Science Foundation of China (61671105, 61172108)
摘要
摘要:针对同频带干扰及脉冲噪声并存的复杂电磁环境下现有时延估计算法性能退化的问题,该文引入双曲正切函数,提出一种改进的广义循环相关熵时延估计(HTGCCE)算法。首先指出脉冲噪声存在时广义循环相关熵算法的优势及性能退化的原因。然后利用双曲正切函数对其进行改进,以提高算法在脉冲噪声下的时延估计性能。仿真实验表明,提出的算法在脉冲噪声的特征指数较小、信噪比较低及信干比较低时仍保持很好的时延估计性能。
关键词:信号处理/
时延估计/
脉冲噪声/
循环相关熵/
同频带干扰
Abstract:In complex electromagnetic environment, due to the impact of co-channel interference and impulsive noise, the performance of existing time delay estimation algorithms degrade severely. In this paper, an improved Generalized Cyclic Correntropy time delay Estimation (HTGCCE) algorithm is proposed by using the Hyperbolic Tangent function to address this degradation problem. Firstly, the performance degradation of generalized cyclic correntropy method is thoroughly analyzed and explained in impulsive noise. Then, based on the hyperbolic tangent function, an improved generalized cyclic correntropy method is proposed to improve the delay estimation performance under impulsive noise. Finally, the simulation results show that the proposed time delay estimation algorithm has an outstanding performance in impulsive noise, even with small characteristic component and low generalized signal-to-noise ratio.
Key words:Signal processing/
Time delay estimation/
Impulsive noise/
Cyclic correntropy/
Co-channel interference
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