This paper proposes a multi-beam search method based on an active phased array antenna system using digital beamforming. It includes initial beamforming, valid beam selection, and beam angle estimation using phase comparison mono pulses for multi-channel signals. To verify DoA estimation error, simulation and measurement are performed using the proposed antenna system. As a result, we confirm the performance of estimating each channel's angle and the beam directional error within 0.5°.

中文翻译：

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全方位波束控制有源相控阵天线系统的快速数字多波束搜索方法

本文提出了一种基于数字波束形成的有源相控阵天线系统的多波束搜索方法。它包括初始波束形成、有效波束选择和使用相位比较单脉冲对多通道信号进行波束角估计。为了验证 DoA 估计误差，使用建议的天线系统进行仿真和测量。结果，我们确认了估计每个通道的角度和波束方向误差在 0.5° 内的性能。