CAJ | 학술논문

直扩／跳频（DS／FH）混合扩频技术的高保密性与强抗截获能力决定了其在抗干扰通信系统的重要作用。研究了制约高跳速DS／FH混合系统实现的因素，分析了制约高跳速速率提升的原因以及提高跳速可行的方法，提出了一种高跳速的DS／FH混合系统设计方案。该方案利用扩频码相位辅助跳频同步，搭建联合跟踪环路来同时完成对扩频码、载波及跳频序列的跟踪。计算机仿真与试验结果表明，该方案可以实现高达万跳每秒速率的DS／FH混合扩频系统。
직확／도빈（DS／FH）혼합확빈기술적고보밀성여강항절획능력결정료기재항간우통신계통적중요작용。연구료제약고도속DS／FH혼합계통실현적인소，분석료제약고도속속솔제승적원인이급제고도속가행적방법，제출료일충고도속적DS／FH혼합계통설계방안。해방안이용확빈마상위보조도빈동보，탑건연합근종배로래동시완성대확빈마、재파급도빈서렬적근종。계산궤방진여시험결과표명，해방안가이실현고체만도매초속솔적DS／FH혼합확빈계통。
The high security and strong anti-interception capability of DS/FH hybrid spread spectrum technology determine its important role in anti-jamming communication systems. The constraining factors of the implementation of high hopping rate in DS/FH hybrid system are studied, and the reasons which restrict the increase of the hopping rate as well as the way to raise the hopping rate are theoretically analyzed. A design of the high hopping rate DS/FH Hybrid system is proposed, which exploits spreading code phase to assist the synchronization of frequency hopping and sets up a joint tracking loop to conduct the simultaneous tracking of the spreading code,the carrier and the hopping sequence. Computer simulation and experiment results indicate that this design can realize tens of thousands of hopping rate per second in DS/FH hybrid spread spectrum system.