猝发通信特征帧结构与快速同步设计  

Characteristic Frame Structure and Fast Synchronization Design of Burst Communication

作　　者：余福荣[1] 陈江[2] 王静雨[1] YU Fu-rong;CHEN Jiang;WANG Jing-yu(Space Star Technology Co.,Ltd.,Beijing 100194,China;College of Information Science and Technology,Beijing University,Beijing 100871,China)

机构地区：[1]航天恒星科技有限公司,北京100194 [2]北京大学信息科学技术学院,北京100871

出　　处：《通信技术》2020年第3期578-583,共6页Communications Technology

摘　　要：猝发扩频通信在时域和频域上实现隐蔽通信,在军事通信中应用广泛。针对猝发扩频通信的传输时间短、安全性与可靠性高的特点,提出了一种可变帧长猝发信号特征帧结构与猝发通信快速同步方法,采用特殊帧结构设计、两层扩频以及分段频偏估计技术,具有猝发时间短、捕获速度快、占有资源少等特点,并在原理样机上进行了性能测试验证,长时间可靠性测试捕获概率达到100%,具有高可靠性和工程应用价值。Burst spread spectrum communication achieves concealed communication in the time and frequency domains,and is widely used in military communications.Aiming at the characteristics of short transmission time,high security and high reliability of burst spread spectrum communication,a variable frame length burst signal characteristic frame structure and fast synchronization method for burst communication are proposed.Special frame structure design,double-layer spread spectrum,and segmented frequency offset estimation techniques are adopted,which have the characteristics of short burst time,fast acquisition speed,and low resource occupation.The performance test is done on the principle prototype,and the capture probability of long-term reliability test reaches 100%,which indicates high reliability and engineering application value.

关 键 词：猝发通信 特征帧结构 两层扩频 快速同步 频偏估计 

分 类 号：TN914[电子电信—通信与信息系统]