Amplitude–Monopulse Design Considerations for WiFi Direction Finding Applications

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Sensors Letters Pub Date : 2024-10-24 DOI:10.1109/LSENS.2024.3486343

Miroslav Hutar;Alejandro Gil-Martínez;José Antonio López-Pastor;Peter Brida;José Luis Gómez-Tornero

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Abstract

In this letter, we investigate different criteria for selecting the mechanical tilting angle needed in amplitude–monopulse antenna arrays, with application to direction finding using wireless local area networks. The antenna system consists of two tilted panel antennas used to compare the received signal strength indicator of the signals coming from Internet of Things mobile devices equipped with WiFi network interface controllers. This comparison is employed to estimate the direction of arrival (DoA) for real-time indoor localization and tracking applications. A DoA monopulse antenna system designed for the 2.4 GHz WiFi band is used as a practical example. Three different tilting angles are investigated to explain the benefits and drawbacks when operating using the conventional half-power beam-crossover point or when different tilting angles are applied. Measurements are carried out in an outdoor multipath scenario, concluding that accuracy and field of view are highly dependent on the tilting angle.

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WiFi 测向应用的振幅单脉冲设计考虑因素

在这封信中，我们研究了选择振幅单脉冲天线阵列所需的机械倾斜角的不同标准，并将其应用于无线局域网的测向。天线系统由两个倾斜的面板天线组成，用于比较来自配备 WiFi 网络接口控制器的物联网移动设备的接收信号强度指标。这种比较可用于估计到达方向（DoA），以实现实时室内定位和跟踪应用。一个为 2.4 GHz WiFi 频段设计的 DoA 单脉冲天线系统被用作一个实际例子。研究了三种不同的倾斜角度，以解释使用传统半功率波束交叉点或应用不同倾斜角度时的优缺点。在室外多径场景中进行了测量，得出的结论是精度和视场高度依赖于倾斜角度。

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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