基于DL-MPWFRFT卫星混沌加密通信研究  

Research on Satellite Chaotic Encryption Communication Based on DL-MPWFRFT

作　　者：王浩波 达新宇[2] 倪磊 潘钰 WANG Hao-bo;DA Xin-yu;NI Lei;PAN Yu(Graduate School,Air Force Engineering University,Xi'an 710077,China;Information and Navigation College,Air Force Engineering University,Xi'an 710077,China)

机构地区：[1]空军工程大学研究生院,陕西西安710077 [2]空军工程大学信息与导航学院,陕西西安710077

出　　处：《测控技术》2019年第9期98-102,共5页Measurement & Control Technology

基　　金：国家自然科学基金(61571460);博士后创新人才支持计划(BX201700108);陕西省自然科学基金青年项目(2018JQ6042)

摘　　要：为了提高卫星通信的安全传输性能,提出了一种基于双层多项多参数加权类分数阶傅里叶变换(Double Layers Multi-parameter Weighted-type Fractional Fourier Transform,DL-MPWFRFT)的卫星混沌相位调制方案。信号在经过QPSK基带映射之后,结合DL-MPWFRFT和Logistic相位扰码进行双重加密,并通过数模转换和射频化处理上载到卫星信道中。仿真结果表明,通过选取合适Logistic参数,可以使得卫星信号星座图分布更加复杂,从而有效增强信号的抗截获性,所提方案较传统加密手段能够提高抗扫描能力1020倍。In order to improve the performance of secure satellite communications,a satellite chaotic phase modulation scheme based on double-layer multi-parameter weighted-type fractional Fourier transform(DL-MPWFRFT)is proposed.After being mapped by using QPSK on the baseband,the signal is double-encrypted in combination with DL-MPWFRFT and Logistic phase scrambling code,and uploaded to the satellite channel through digital-to-analog conversion and radio frequency processing.The simulation results show that the constellation distribution of satellite signal can be more complicated by selecting the appropriate Logistic parameters,which can effectively enhance the anti-interception of the signal.The proposed scheme can improve the anti-scanning capability by 1020 times compared with the traditional encryption methods.

关 键 词：卫星通信 加权类分数阶傅立叶变换 Logistic混沌加密 星座图 

分 类 号：TN914.3[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]