【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。更多还原

【Abstract】 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.更多还原