In this letter, an alternating iterative adaptive approach (AIAA) for direction of arrival (DOA) estimation via acoustic vector sensor (AVS) array under directivity bias is proposed. Firstly, the directivity bias parameter is introduced into the signal model. An AIAA is then developed to estimate the sparse signal and the directivity bias matrix iteratively. In each iteration, in order to eliminate the effect of directivity bias, the directivity bias matrix reconstruction method based on the inherent directivity of AVS is presented. Simulation results show that the proposed method effectively improves the accuracy of DOA estimation compared with other state-of-the-art methods.

中文翻译：

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在方向性偏差下通过声矢量传感器阵列进行 DOA 估计的交替迭代自适应方法

在这封信中，提出了一种在方向性偏差下通过声矢量传感器 (AVS) 阵列进行到达方向 (DOA) 估计的交替迭代自适应方法 (AIAA)。首先，将方向性偏置参数引入到信号模型中。然后开发一个 AIAA 以迭代地估计稀疏信号和方向性偏差矩阵。在每次迭代中，为了消除方向性偏差的影响，提出了基于AVS固有方向性的方向性偏差矩阵重构方法。仿真结果表明，与其他最先进的方法相比，所提出的方法有效地提高了DOA估计的准确性。