Addressing Specularity: Millimeter-Wave Radar With Distributed Repeater Apertures

IF 4.1 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-11-05 DOI:10.1109/TMTT.2024.3486242

Tasin Nusrat;Stavros Vakalis

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引用次数: 0

Abstract

A new method of millimeter-wave (mmWave) radar sensing using distributed repeaters that can address the strong specular reflections is presented in this article. Specular reflections happen when targets reflect incident electromagnetic signals at specific directions depending on the angle of incidence. These mirror-like reflections can degrade radar performance and make detection more challenging as transmitted radar energy does not necessarily reflect back to the radar receiver. This article proposes a way to combat the specular responses from scattering targets by utilizing distributed repeater apertures at mmWave frequencies. Distributed repeaters can capture and retransmit the specular wavefront to improve the target detection and enhance image reconstruction. In this article, we discuss the theory behind our work, include simulated results and verify our approach by building experimental 36–38 GHz mmWave imaging systems with one and two distributed repeaters. The results presented in this article pave the way for accurate detection of highly specular targets.

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寻址反射性：具有分布式中继器孔径的毫米波雷达

本文提出了一种利用分布式中继器处理强镜面反射的毫米波雷达传感新方法。当目标根据入射角在特定方向反射入射电磁信号时，就会发生镜面反射。这些镜面反射会降低雷达性能，使探测变得更加困难，因为发射的雷达能量不一定会反射回雷达接收器。本文提出了一种利用毫米波频率下的分布式中继器孔径来对抗散射目标的镜面响应的方法。分布式中继器可以捕获和重传镜面波前，以提高目标检测和增强图像重建能力。在本文中，我们讨论了我们工作背后的理论，包括模拟结果，并通过构建具有一个和两个分布式中继器的实验性36-38 GHz毫米波成像系统来验证我们的方法。本文提出的结果为高镜面目标的精确探测铺平了道路。

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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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.