Antenna Array Design for Coherent MIMO Radar Networks

2023 IEEE Radar Conference (RadarConf23) Pub Date : 2023-05-01 DOI:10.1109/RadarConf2351548.2023.10149789

Vinzenz Janoudi, Pirmin Schoeder, Timo Grebner, D. Schwarz, C. Waldschmidt, J. Dickmann, N. Appenrodt

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引用次数: 1

Abstract

High angular resolution provides improved environmental perception and increases the detection quality of extended targets. It is therefore a key requirement towards future radar systems for autonomous driving. The angular resolution of a radar system fundamentally depends on its antenna array aperture size. It is technically difficult and economically challenging to realize a large aperture radar system as a single sensor. Radar networks, consisting of multiple individual radar sensors, mitigate the challenges caused by creating a large aperture radar system. This paper presents a radar network consisting of two individual MIMO radar sensors equipped with L-shaped physical antenna arrays. L-shaped arrays for the individual sensors are chosen to achieve a rectangular equally spaced radar network vir-tual aperture. Furthermore, the paper discusses the performance of the resulting virtual aperture in the context of DoA estimation. Measurements of a bicycle, conducted with a coherently coupled radar network consisting of 768 virtual channels, demonstrate the performance of a high angular resolution radar system.

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相干MIMO雷达网络天线阵列设计

高角度分辨率提供了更好的环境感知，提高了扩展目标的检测质量。因此，这是未来自动驾驶雷达系统的关键要求。雷达系统的角分辨率从根本上取决于其天线阵列孔径大小。单传感器实现大孔径雷达系统在技术上和经济上都具有一定的难度。雷达网络由多个单独的雷达传感器组成，减轻了创建大孔径雷达系统所带来的挑战。本文提出了一个由两个独立的MIMO雷达传感器组成的雷达网络，该雷达传感器配备了l形物理天线阵列。每个传感器选择l型阵列，以实现一个矩形等间距雷达网络虚拟孔径。此外，本文还讨论了在DoA估计的背景下产生的虚拟孔径的性能。利用由768个虚拟信道组成的相干耦合雷达网络对自行车进行了测量，验证了高角分辨率雷达系统的性能。

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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2023 IEEE Radar Conference (RadarConf23)

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