全息雷达:探测精度最大化的最佳波束形成器设计

Haobo Zhang, Hongliang Zhang, Boya Di, Zhu Han, Lingyang Song
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引用次数: 0

摘要

作为一种新兴的天线技术,可重构全息表面(rss)作为一种有前途的解决方案,最近引起了人们的广泛关注,使未来的雷达系统具有严格的功率和成本要求。在本文中,我们提出了基于rss的全息雷达,其中两个rss作为发射和接收天线来探测远场目标。由于RHS中超材料元件结构简单、成本低,使得全息雷达与传统相控阵雷达相比,能够以更小的成本和功耗获得令人满意的探测性能。为了最大限度地提高全息雷达的探测精度,推导了具有最高信噪比(SNR)的闭式波束形成器表达式,以充分利用集成rss的优势。据我们所知,这是第一次对rhs的全局最佳波束形成器设计进行研究。仿真结果也验证了该方案在全息雷达中的优越性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Holographic Radar: Optimal Beamformer Design for Detection Accuracy Maximization
As an emerging antenna technique, reconfigurable holographic surfaces (RHSs) have drawn much attention recently as a promising solution to enable future radar systems with stringent power and cost requirements. In this paper, we propose RHS-empowered holographic radar, where two RHSs serve as transmit and receive antennas to detect a far-field target. Due to the simple and low-cost structure of metamaterial elements in the RHS, the holographic radar is able to achieve satisfactory detection performance at a smaller cost and power consumption compared with a traditional phased array radar. To maximize the detection accuracy of a holographic radar, a closed-form beamformer expression with the highest signal-to-noise ratio (SNR) is derived in order to fully exploit the benefit of incorporating RHSs. To the best of our knowledge, this is the first study on the global optimal beamformer design for RHSs. Simulation results also verify the superiority of the proposed scheme for holographic radar.
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