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近年来，UAV因其高灵活性和广泛的应用场景，在现代通信网络中扮演着重要角色。由于UAV通信链路通常处于开放空域，极易受到窃听和恶意干扰的威胁，物理层安全(Physical Layer Security, PLS)问题亟待解决。作为一种新型的二维人工电磁表面，智能反射面(Intelligent Reflecting Surface, IRS)由大量具有特殊设计的被动散射单元组成，能够对信号反射路径进行智能调控，为改善信道环境和增强物理层安全提供了全新的技术手段。因此，IRS在UAV通信中的应用引起了广泛关注，为解决开放空域中的通信安全问题提供了新的方向。通过对现有的国内外文献进行梳理，主要从保密速率(Secrecy Rate, SR)、保密能效(Secrecy Energy Efficiency, SEE)和保密中断概率(Secrecy Outage Probability, SOP)三方面概述了地面固定IRS系统和UAV搭载IRS系统在PLS领域的研究现状。分析了当前研究存在的不足，展望了IRS辅助UAV通信系统在PLS领域的未来研究方向。
Abstract：In recent years, UAV has played an important role in modern communication networks due to their high flexibility and diverse application scenarios. However, since UAV communication links typically operate in open airspace, they are highly vulnerable to eavesdropping and malicious interference, making Physical Layer Security(PLS) an urgent issue to be addressed. As a novel two-dimensional artificial electromagnetic surface, the Intelligent Reflecting Surface(IRS) consists of numerous passive scattering units with specially designed structures, which can intelligently adjust signal reflection paths. This provides a new technological approach to improving channel conditions and enhancing physical layer security. Consequently, the application of IRS in UAV communications has attracted widespread attention and offers a new direction for addressing communication security issues in open airspace. Through a review of existing domestic and international literature, the research status of ground-fixed IRS systems and UAV-mounted IRS systems in PLS are summarized, focusing on three aspects: Secrecy Rate(SR), Secrecy Energy Efficiency(SEE), and Secrecy Outage Probability(SOP). The existing shortcomings in current research are analyzed and an outlook on future research directions for IRS-assisted UAV communication systems in the field of PLS are provided.
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基本信息:
DOI：
中图分类号:TN918;V279
引用信息:
[1]王正强,孔维冬,万晓榆等.IRS辅助无人机通信系统的物理层安全研究综述[J].无线电工程,2025,55(06):1133-1143.
基金信息:
四川省区域创新合作项目(2022YFQ0017)~~