短波物理层安全传输技术  

Physical-Layer Security Transmission in HF Communications

作　　者：周军[1] 周琦 王新 ZHOU Jun;ZHOU Qi;WANG Xin(No.30 Institute of CETC,Chengdu Sichuan 610041,China;Institute of System Engineering,Academy of Military Science,Beijing 100039,China)

机构地区：[1]中国电子科技集团公司第三十研究所,四川成都610041 [2]军事科学院系统工程研究院,北京100039

出　　处：《通信技术》2019年第3期692-695,共4页Communications Technology

摘　　要：短波通信由于通信距离远,覆盖范围大,在军事通信中应用广泛,但是随着计算机运算能力的提升,传统短波军事通信面临着被截获和破译的威胁,为了提高短波通信系统的抗截获能力,提出了一种基于星座加密的物理层安全传输技术,采用密码序列对传统的调制信号相位进行加密,使其相位随机化,并基于美军短波MIL-STD-188-141A标准的波形上评估了加密后的波形的峰均比,信号频谱和传输性能,证明了该技术对系统的性能影响很小,并且提高了系统的抗截获能力。HF communication is widely used in military communication for its long communication distance,large coverage and strong anti-destructive ability.However,with the improvement of computing power of computers,traditional HF military communications are threatened by interception and deciphering.In order to improve the anti-interception ability of HF communication systems,a physical-layer security transmission technology based on constellation encryption is proposed.The phase of the conventional modulated signal is encrypted by using a cryptographic sequence,thus to randomize its phase.Moreover,based on MIL-STD- 188-141A,the evaluations on PAPR,frequency spectrum and transmission performance of the encrypted waveform are done,and the results indicates that the technology has little impact on the performance of the system,and could improve the anti-interception ability of the system.

关 键 词：短波 物理层安全 星座图 加密 

分 类 号：TN911.23[电子电信—通信与信息系统]