ABSTRACT In this study, an adaptive pattern nulling approach of half-wave dipole uniform linear arrays (DULA), inspired by binary bat algorithm (BBA)-based beamformers and the phase-only control of array excitation weights, has been proposed. This helps suppress interference with unknown directions in the sidelobe region. Several scenarios have been conducted to investigate the performance of the proposal including operation speed and adaptive pattern nulling with or without the effect of mutual coupling. The simulation results show that the proposed approach is a potential solution to precisely place nulls at any direction of unknown interferences while maintaining the main lobe and suppressing the sidelobes. In addition, regarding the pattern nulling, the approach proposed in this study demonstrates greater efficiency and higher speed than those using binary particle swarm optimization (BPSO).

中文翻译：

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存在未知干扰的有效 ULA 模式归零方法

摘要 在这项研究中，受基于二进制蝙蝠算法 (BBA) 的波束形成器和阵列激励权重的仅相位控制的启发，提出了一种半波偶极均匀线性阵列 (DULA) 的自适应模式归零方法。这有助于抑制旁瓣区域中未知方向的干扰。已经进行了几个场景来研究该提案的性能，包括运行速度和自适应模式归零，有或没有相互耦合的影响。仿真结果表明，所提出的方法是一种潜在的解决方案，可以在任何未知干扰方向精确放置零点，同时保持主瓣和抑制旁瓣。此外，关于模式归零，