基于数据矩阵聚焦的宽带DOA 算法

刘春静; 刘枫; 张曙

doi:10.15892/j.cnki.djzdxb.2010.01.058

2010 , Vol. 30 >Issue 1: 190 - 192

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2010.01.058

摘要

传统的基于相干信号空间聚焦的宽带DOA算法具有良好的空间分辨能力、较低的信噪比门限,但必须通过角度预估计来构造相应的聚焦矩阵。文中提出了一种不需要角度预估的相干宽带DOA算法,直接利用阵列接收数据构造聚焦变换矩阵,避免了预估计角度对聚焦变换的影响,同时降低了算法的运算量。计算机仿真表明该算法是有效的。

关键词： 数据矩阵聚焦; 宽带; 相干; DOA

本文引用格式

刘春静 , 刘枫 , 张曙 . 基于数据矩阵聚焦的宽带DOA 算法[J]. 弹箭与制导学报, 2010 , 30(1) : 190 -192 . DOI: 10.15892/j.cnki.djzdxb.2010.01.058

Abstract

The conventional wideband direction of arrival (DOA) algorithms based on coherent signal-subspace focusing have excellent spatial resolution ability and low signal-to-noise threshold. However, they must rely on the preliminary angle estimates to construct the corresponding focusing matrices. This paper presents a coherent wideband DOA algorithm without using the initial estimates of angles. The proposed method processes the array output vectors directly to construct the focusing matrices that aim at avoiding the influence of the predetermined angle estimates. Furthermore, the new method reduces the computational burden. Computer simulation results have proved that the provided algorithm is effective.

Key words： data matrix focusing; wideband; coherent; DOA

参考文献

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