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本文研究了天线阵元间互耦对最大熵谱估计测向性能的影响,阐明了互耦使测向性能下降的机制,提出了一种能克服互耦影响的改进方法。计算机模拟结果表明,改进的最大熵谱估计测向方法在很大程度上提高了测向的精度和分辨率。
In this paper, the influence of mutual coupling between antenna elements on the performance of maximum entropy spectrum estimation and direction finding is studied. The mechanism of decoupling of direction finding performance is clarified and an improved method to overcome the influence of mutual coupling is proposed. Computer simulation results show that the improved maximum entropy spectrum estimation method greatly improves the accuracy and resolution of DF.