太赫兹通信物理层安全技术发展研究

在太赫兹通信技术快速发展的背景下，建筑遮挡、恶劣天气等原因导致的复杂、弥散信道对通信安全性、可靠性提出新的挑战。太赫兹通信的保密属性在通信网络的广域性下隐含泄露、窃听等风险，研究现有的加密和防窃听手段在太赫兹通信中的可行性，推动物理层安全技术的创新与应用，实现信息的稳定安全传输，成为具备研究价值的热点问题。本文从安全通信角度出发，分析部分现有物理层加密与防窃听方法，总结其在太赫兹通信领域中的融合应用与效果，并对其未来发展趋势进行展望。

Development of physical layer security communication in terahertz band

In the context of rapid development of terahertz communication technology, the complex scattering property of wireless channel caused by building occlusion, bad weather and other reasons poses new challenges on secure and reliable data transmission. The confidentiality property of terahertz communication contains risks such as leakage and eavesdropping under the wide area of the communication network. Investigations on the feasibility of existing encryption and anti-eavesdropping methods in terahertz communication systems, promoting the innovation and application of physical layer security technology, and achieving stable and secure data transmission have become a valuably urgent topic. In this paper, from the perspective of secure communication, some of the existing physical layer encryption and anti-eavesdropping methods are presented and analyzed; their fusion applications and efficiencies in terahertz communication are summarized; and the trends on future development are expected.