5G radio for millimeter-wave (mm-wave) and beyond5G concepts at 0.1-1 THz can exploit angle and delay measurements for localization through an increased bandwidth and large antenna arrays, but they are limited in terms of blockage caused by obstacles. Reconfigurable intelligent surfaces (RISs) are seen as a transformative technology that can control the physical propagation environment in which they are embedded by passively reflecting radio waves in preferred directions and actively sensing this environment in receive and transmit modes. While such RISs have mainly been intended for communication purposes, they can provide great benefits in terms of performance, energy consumption, and cost for localization and mapping. These benefits as well as associated challenges are the main topics of this article.

中文翻译：

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具有可重构智能表面的无线电定位和测绘：挑战、机遇和研究方向

用于毫米波 (mm-wave) 和超 0.1-1 THz 的 5G 概念的 5G 无线电可以通过增加的带宽和大型天线阵列来利用角度和延迟测量进行定位，但它们在由障碍物引起的阻塞方面受到限制。可重构智能表面 (RIS) 被视为一种变革性技术，它可以通过在首选方向上被动反射无线电波并在接收和传输模式下主动感知该环境来控制其嵌入的物理传播环境。虽然此类 RIS 主要用于通信目的，但它们可以在性能、能源消耗以及定位和映射成本方面提供巨大优势。这些好处以及相关的挑战是本文的主要主题。