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Joint Estimation of 2D-DOA and Frequency Based on Space-Time Matrix and Conformal Array

机译：基于时空矩阵和保形阵列的2D-DOA和频率的联合估计

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摘要

Each element in the conformal array has a different pattern, which leads to the performance deterioration of the conventional high resolution direction-of-arrival (DOA) algorithms. In this paper, a joint frequency and two-dimension DOA (2D-DOA) estimation algorithm for conformal array are proposed. The delay correlation function is used to suppress noise. Both spatial and time sampling are utilized to construct the spatial-time matrix. The frequency and 2D-DOA estimation are accomplished based on parallel factor (PARAFAC) analysis without spectral peak searching and parameter pairing. The proposed algorithm needs only four guiding elements with precise positions to estimate frequency and 2D-DOA. Other instrumental elements can be arranged flexibly on the surface of the carrier. Simulation results demonstrate the effectiveness of the proposed algorithm.
机译：共形阵列中的每个元件具有不同的模式，这导致传统的高分辨率方向（DOA）算法的性能劣化。本文提出了一种针形阵列的接合频率和二维DOA（2D-DOA）估计算法。延迟相关函数用于抑制噪声。空间和时间采样都用于构造空间时间矩阵。频率和2DOA估计是基于不具有光谱峰值搜索和参数配对的平行因子（PARAFAC）分析来完成的。该算法仅需要四个引导元件，具有精确的位置来估计频率和2D-DOA。其他乐器元件可以在载体的表面上灵活地布置。仿真结果证明了所提出的算法的有效性。

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