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基于中心对称的圆阵,提出了一种针对不相关源和成对相干源的波达方向(DOA)估计方法.这是一种分两步估计的方法,首先利用阵列流形的唯一性条件估计出不相关源;然后通过构造中心对称的阵列流形来去除不相关源的干扰,同时达到去除成对相干源相干性的目的.这种方法简单有效,由于直接在阵元空间进行估计而不需要进行波束变换,因此具有较高的估计精度.仿真实验结果验证了该方法的有效性.
Based on the center-symmetric circular array, a DOA estimation method for uncorrelated sources and paired coherent sources is proposed, which is a two-step estimation method. Firstly, the uniqueness of array manifolds Then the uncorrelated sources are estimated, and then the center-symmetric array manifold is used to remove the uncorrelated sources and achieve the purpose of removing the coherence of pairs of coherent sources. The method is simple and effective, because it is directly estimated in the array space It does not need to do beamforming, so it has higher estimation accuracy.The simulation results verify the effectiveness of the method.