平方公里阵中频孔径阵的几何特性研究

2015 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2015-10-15 DOI:10.1109/ICEAA.2015.7297172

A. El-Makadema, Yongwei Zhang, Ming Yang, A. Brown

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引用次数: 2

摘要

本文以SKA-MFAA为例，研究了在射电天文应用中减少紧密耦合密集孔径阵列中元素总数的性能限制。它表明，通过结合使用三角形网格配置和随机细化，可以在不显著牺牲性能的情况下减少多达20%的元素总数。这对降低成本有很大的影响，因为元素的数量是这种大型阵列系统的主要成本驱动因素。通过对SKA-MFAA主要候选天线ORA阵列的全波模拟验证了结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the geometry of the Square Kilometer Array Mid-Frequency Aperture Array

This paper looks at the performance limits of reducing the total number of elements in a tightly coupled dense aperture arrays for radio astronomical applications particularly the case of the SKA-MFAA. It shows that by using a combination of triangular grid configuration and random thinning, a reduction of up to 20% of the total number of elements can be achieved without any significant sacrifice on performance. This has a major impact on reducing the cost since the number of elements is a main cost driver in such large array systems. The results are demonstrated through full wave simulation of the ORA array which is a major candidate for the SKA-MFAA.

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2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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