一种用于未知噪声背景中高分辨DOA估计的方法

A Method for High-resolution DOA Estimation in Unknown Noise Environments

本文基于噪声在空间有限范围内相关的假设，采用两个具有足够空间间距的阵列，应用正则相关分析原理，给出了一种未知噪声背景中有效地估计信号子空间的方法，并利用与TLS－ESPRIT相类似的算法进行了DOA估计，计算机模拟实验表明：该方法具有较好的方向估计性能。

This paper deals with the problem of high-resolution direction of arrival (DOA) estimation of narrowband plane wave in unknown noise environments.Based on an assumption that the noise is correlated only over a Iimited spatial range. two sufficiently seperated sensor arrays used so that the correlation of the noise vetors between the two arrays can be considered negligible. To estimate signal subspace canonical correlation method is employed.Then,DOA estimation is carried out by using the spatial invariance between arrays,which is imilar to the TLS-ESPRIT algoritnms