[1]张端金,张中华,郭建军,等.基于四阶累积量的时延估计新方法[J].郑州大学学报(工学版),2010,31(01):106.
　ZHANG Duanjin,ZHANG Zhonghua,GUO Jianjun,et al.New Time Delay Estimation Based on Fourth—-order Cumulants[J].Journal of Zhengzhou University (Engineering Science),2010,31(01):106.
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基于四阶累积量的时延估计新方法()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
31
期数:
2010年01期
页码:
106
栏目:
出版日期:
2010-01-30

文章信息/Info

Title:
New Time Delay Estimation Based on Fourth—-order Cumulants
作者:
张端金; 张中华; 郭建军; 等.
郑州大学信息工程学院,河南,郑州,450001
Author(s):
ZHANG Duanjin; ZHANG Zhonghua; GUO Jianjun; etc
School of Information Engineering，Zhengzhou University，Zhengzhou 450001，China
Keywords:
School of Information Engineering; Zhengzhou University; Zhengzhou 450001; China
文献标志码:
A
摘要:
针对无线电定位中的时延估计问题,考虑接收信号为窄带信号以及背景噪声为高斯分布的情况下,将四阶累积量的一维切片作为高阶统计量,结合希尔伯特变换,给出一种新的时延估计方法.该方法对相关峰值进行了锐化处理,提高了估计精度.与广义互相关法相比,该算法可有效抑制空间相关高斯噪声的影响,计算量小,易于实现.仿真结果表明了该方法的有效性.
Abstract:
The problem of time delay estimation in wireless location is investigated．In the case of the receivedsignal with the narrow—band and background noises with the Gaussian distribution，a new algorithm of timedelay estimation is presented in terms of the Hilbert transform and the fourth—order cumulant．Correlationpeak is sharpened to improve the accuracy of estimation．Compared with generalized cross—correlated algo—rithm。the proposed approach can suppress the spatially correlated Gaussian noises．The algorithm is of lowcomputation complexity and easy to implement．Simulation results show the effectiveness of the algorithm．
更新日期/Last Update: 1900-01-01