In future cellular systems, wireless localization and sensing functions will be built-in for specific applications, e.g., navigation, transportation, and healthcare, and to support flexible and seamless connectivity. Driven by this trend, the need for fine-resolution sensing solutions and centimeter-level localization accuracy arises, while the accuracy of current wireless systems is limited by the quality of the propagation environment. Recently, with the development of new materials, reconfigurable intelligent surfaces (RISs) provide an opportunity to reshape and control the electromagnetic characteristics of the environment, which can be utilized to improve the performance of wireless sensing and localization. In this tutorial, we will first review the background and motivation for utilizing wireless signals for sensing and localization. Next, we will introduce how to incorporate RIS into applications of sensing and localization, including key challenges and enabling techniques, and then, some case studies will be presented. Finally, future research directions will also be discussed.

中文翻译：

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通过可重构智能表面实现无处不在的传感和定位


在未来的蜂窝系统中，将针对特定应用（例如导航、交通和医疗保健）内置无线定位和传感功能，并支持灵活和无缝的连接。在这一趋势的推动下，对高分辨率传感解决方案和厘米级定位精度的需求出现，而当前无线系统的精度受到传播环境质量的限制。近年来，随着新材料的发展，可重构智能表面（RIS）提供了重塑和控制环境电磁特性的机会，可用于提高无线传感和定位的性能。在本教程中，我们将首先回顾利用无线信号进行传感和定位的背景和动机。接下来，我们将介绍如何将 RIS 融入传感和定位应用中，包括关键挑战和实现技术，然后将介绍一些案例研究。最后，还将讨论未来的研究方向。