四维直接序列扩频调制技术识别方法  

Identification Method of Four Dimensional Direct Sequence Spread Spectrum Modulation Technology

作　　者：华博 毛忠阳 康家方 刘传辉 张磊 HUA Bo;MAO Zhongyang;KANG Jiafang;LIU Chuanhui;ZHANG Lei(Department of Aeronautical Communication,School of War Service,Naval Aviation University,Yantai 264001,China)

机构地区：[1]海军航空大学战勤学院航空通信教研室,山东烟台264001

出　　处：《无线电通信技术》2021年第2期220-225,共6页Radio Communications Technology

基　　金：国家自然科学基金项目(61701518)。

摘　　要：针对不同扩频调制技术之间无法互通的问题,结合不同的时频分析工具,从调制信号特征参量角度出发,提出可有效区分新旧扩频调制技术的识别方法,从而达到两种不同扩频调制通信系统之间互通互联的效果。理论分析与仿真结果表明,两种扩频调制信号的时频特征区分度较小,但高阶累积量特征具备明显的区分度,考虑到处理的实时性,利用四阶累积量可以有效解决新旧扩频调制体制的识别问题。To solve the problem that different spread spectrum modulation technologies can not communicate with each other,combined with different time-frequency analysis tools and from the perspective of modulation signal characteristic parameters,the paper proposed a recognition method that can effectively distinguish the old and new spread spectrum modulation technologies,so as to achieve the effect of interconnection between two different spread spectrum modulation communication systems.Theoretical analysis and simulation results show that time-frequency characteristics of the two kinds of spread spectrum modulation signals are small,but the high-order cumulant features have obvious differentiation.Considering the real-time processing,the fourth-order cumulant can effectively solve the identification problem of new and old spread spectrum modulation systems.

关 键 词：四维直接序列扩频调制 调制识别 高阶累积量 

分 类 号：TN911[电子电信—通信与信息系统]