一种2- PAD数字宽带波束形成结构
A Digital Broadband Beamforming Architecture for 2-PAD
摘要：
我们描述了一种分层的，频域波束形成架构，用于从数字孔径阵列的宽带天线馈源合成天空波束。密集排列的全数字孔径阵列的发展是平方公里阵列（SKA）射电望远镜所需的一个重要研究领域。数字孔径阵列的实时信号处理系统的设计是目前世界范围内探路者项目的核心挑战。特别是，这项工作描述了一个具体的实施波束形成架构的2极化全数字（2-PAD）孔径阵列演示。
英文摘要：
We describe an hierarchical, frequency-domain beamforming architecture for synthesising a sky beam from the wideband antenna feeds of digital aperture arrays. The development of densely-packed, all-digital aperture arrays is an important area of research required for the Square Kilometre Array (SKA) radio telescope. The design of real-time signal processing systems for digital aperture arrays is currently a central challenge in pathfinder projects worldwide. In particular, this work describes a specific implementation of the beamforming architecture to the 2-Polarisation All-Digital (2-PAD) aperture array demonstrator.
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