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现有的二维相干分布源波达方向估计算法都需要一维或多维搜索,算法复杂度高,而且大部分算法都针对分布源特定的角信号分布函数设计,当分布源角信号分布函数未知或不同分布的分布源共同存在时,算法性能将严重恶化.文中利用双均匀线阵,给出了一种无需搜索的低复杂度二维相干分布源波达方向解耦估计方法及参数配对方法,适用于分布源角信号分布函数未知及不同分布的分布源共同存在的情况.仿真结果验证了算法的有效性.
The existing algorithms for source DOA estimation of two-dimensional coherent distribution require one-dimensional or multi-dimensional search, and the algorithm has high complexity. Most of the algorithms are designed for the distributed source-specific angular signal distribution function. When the distribution source angle signal distribution function is unknown Or distributed sources with different distributions coexist, the performance of the algorithm will be seriously deteriorated.This paper presents a DOA-free co-distribution source DOA decoupling estimation method and parametric pairing method using double uniform linear arrays , Which is suitable for the co-existence of distribution sources with unknown source distribution angle and different distributions.The simulation results verify the effectiveness of the algorithm.