论文标题
启用RIS的无源雷达针对目标定位
RIS-Enabled Passive Radar towards Target Localization
论文作者
论文摘要
在本文中，我们研究了一种以通信为中心的集成感应和通信（ISAC）方法，其中访问点（AP）与用户进行通信，而环境中存在被动雷达（PR）。我们研究了可重构智能表面（RIS）的部署，以使PR能够定位目标。我们得出了一个优化问题，用于更新每个时期RIS的相位变速器。由于PR上的信息有限，例如未知的有效载荷信息和场景中的目标数量未知数，我们提出了两种能够执行关节到达角度估计和检测目标的方法。与禁忌基线方案相比，我们通过数值模拟证明了这些方法的出色性能在提出的设置上。
In this paper, we study a communication-centric integrated sensing and communication (ISAC) approach, where an access point (AP) communicates with users, while a passive radar (PR) is present in the environment. We investigate the deployment of a reconfigurable intelligent surface (RIS) to enable the PR to localize a target. We derive an optimization problem for updating the phase shifters of the RIS per epoch. Due to the limited information at the PR, such as unknown payload information and unknown number of targets in the scene, we propose two methods capable of performing joint angle of arrival estimation and detection of the targets. We demonstrate the superior performance of the methods onto the proposed setting through numerical simulations, in comparison to a no-RIS baseline scheme.
