卫星互联网物理层安全分析研究

Analysis and research on the physical layer security of Satellite Internet

随着卫星互联网的快速发展,如何保证星地通信的安全成为一个不可避免的问题。相比传统的用于通信安全的密钥加密方式,新型并趋于实用的物理层安全技术作为一种新的选择,填补了密钥加密方式的许多不足。其通过充分利用信息传输时的无线信道特性,为解决现有的安全传输问题提供了新的解决思路。该工作围绕安全通信模型展开,将实际卫星通信场景根据位置关系分为两种情况,从基础理论出发分别综述了在不同条件下采用的物理层安全技术,最后指出了未来安全通信技术的研究方向与面临的挑战。

With the rapid development of Satellite Internet,how to ensure the security of satellite-to-ground communication has become an inevitable problem.Compared with the traditional key encryption method used for communication security,the new and prac-tical physical layer security technology is a new choice,which makes up many shortcomings of the key encryption method.By making full use of the wireless channel characteristics during the information transmission,it provides a new solution to the existing problem during the security transmission.Focusing on the secure communication model,the actual satellite communication scenario was divided into two situations according to the location relationship,and the physical layer security technologies adopted under different conditions were reviewed from the basic theory.Finally,the future research directions and challenges of the secure communication technology were pointed out.