采用等距ニ元矢量水听器直线阵的ニ维波达方向估计

为了减小传统四元矢量水听器阵的尺寸和减少冗余阵元，提出了采用等距二元矢量水听器直线阵的二维波达方向( DOA)估计方法。每个阵元（矢量水听器）由空间共点的一个声压水听器和一个振速水听器构成。其中声压水听器阵可以被划分为2个子阵，它们构成旋转对，旋转因子为包含某一轴方向余弦信息的相位延迟因子。振速水听器阵可以被划分为2个子阵，它与声压水听器阵构成旋转对，旋转因子为另一轴方向余弦。基于旋转子空间不变法( ESPRIT)的思想，采用并行总体最小二乘(TLS)矩阵束方法实现对旋转因子的估计和自动配对，从而实现二维DOA佶计。计算机仿真实验结果证明了该方法的有效性。

Direction of Arrival Estimation Using a Uniform Line Array of Two-component Vector Hydrophones

To reduce the traditional array size of four-component vector hydrophones and redundant components,a new direction of arrival(DOA) estimation method was proposed using a uniform line array of two-component vector hydrophones.Each vector hydrophone is composed of one velocity hydrophone plus another co-located pressure hydrophone.The pressure hydrophone array manifold can be divided into two subarray manifolds,which constitute a rotation pair,and the rotational invariant factors comprise the source's direction cosine.The velocity hydrophone array manifold can also be divided into two subarray manifolds,which constitute a rotation pair with the pressure hydrophone array manifold,and the rotational invariant factors comprise the source's other direction cosine.Based on ESPRIT,a parallel TLS matrix pencil method is devised to estimate accurately and pair automatically invariant factors,then determine direction of arrival.The Monte-Carlo simulation results verify its efficiency.