| 基于粒子滤波的宽带信号波达方向估计 |
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| 引用本文： | 吴孙勇,廖桂生,杨志伟.基于粒子滤波的宽带信号波达方向估计[J].电子学报,2011,39(6):1353-1357. |
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| 作者姓名： | 吴孙勇 廖桂生 杨志伟 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室;桂林电子科技大学数学与计算科学学院; |
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| 基金项目： | 国家杰出青年科学基金(No.60825104); 国家自然科学基金项目(No.60736009,No.60901066) |
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| 摘 要： | 利用粒子滤波对不同频率点处的目标阵列流形进行跟踪,实现宽带信号波达方向估计.该算法基于当前时刻的观测信息,无需估计观测协方差矩阵,使得在短数据情况下仍能够取得优良的估计性能.同时算法从一组随机的初始值出发,无需预估计波达方向,并且递推过程是基于极大似然估计的思想,具有解相关的能力.计算机仿真验证了算法在短数据、低信噪比...
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| 关 键 词： | 宽带信号 粒子滤波 DOA估计 CSM |
| 收稿时间： | 2010-01-10 |
Direction of Arrival Estimation of Wideband Signal Based on Particle Filters |
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| WU Sun-yong,LIAO Gui-sheng,YANG Zhi-wei.Direction of Arrival Estimation of Wideband Signal Based on Particle Filters[J].Acta Electronica Sinica,2011,39(6):1353-1357. |
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| Authors: | WU Sun-yong LIAO Gui-sheng YANG Zhi-wei |
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| Institution: | 1. National Lab of Radar Signal Processing,Xidian University,Xi'an,Shaanxi 710071,China;2. Department of Computational Science and Mathematics,Guilin University of Electronic Technology,Guilin,Guangxi 541004,China |
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| Abstract: | This paper proposes a new method for estimating the direction-of-arrival(DOA) of wideband signal,which employs particle filters to track array manifold at different frequency bands.Compared with the coherent signal-subspace method(CSM),the proposed method utilizes the current observed data and does not require the estimated covariance matrix,thus it performs better while considering a small sample set.In the meantime,this method does not require the preliminary DOA estimates.Moreover,the proposed method can... |
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| Keywords: | wideband signal particle filters DOA estimation CSM |
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