一种跳频抗干扰方案的设计及其性能分析  

Design of anti-jamming frequency-hopping scheme and analysis of its performance

作　　者：全厚德[1] 李苏阳[1] 

机构地区：[1]军械工程学院信息工程系,石家庄050003

出　　处：《海军工程大学学报》2013年第4期68-73,共6页Journal of Naval University of Engineering

摘　　要：为解决宽带噪声干扰和跟踪干扰会使传统跳频通信失去跳频增益的问题,提高通信的可靠性,提出了一种短波跳频通信技术——图样调制跳频。将跳频序列上的跳点按照时间进行分组,组内某几个跳点不发射载频,以此形成不同的发射图样;采用理论分析与仿真相结合的方法,研究了图样调制跳频方案在宽带噪声干扰和跟踪干扰下的误比特率,并与传统跳频进行了对比。结果证明,图样调制技术使跳频通信在宽带噪声干扰和跟踪干扰下的误比特率显著下降,跟踪干扰信号帮助了信息解调;在传统跳频无法正常通信时,使用图样调制跳频方案可以保持较高的可靠性和保密性。Under wide-band noise jamming and follower jamming, the conventional frequency hopping system tends to lose frequency-hopping processing gain. In order to improve the communication relia- bility, this paper presents a new FH scheme, which is called pattern modulation frequency hopping （PMFH） scheme. The hopping frequencies fall chronologically into groups, in which some frequen- cies are transmitted while the others are not. Thus, FH carriers form different patterns. Based on the theoretical analysis and simulation, the performance of PMFH scheme under wide-band jamming and follower jamming is analyzed and compared with FH/BFSK system. The results show that BER of PMFH scheme decreases significantly, that the follower jamming signal helps demodulation and that the pattern modulation frequency hopping scheme keeps good communication reliability and confidentiality.

关 键 词：跳频通信 图样调制 宽带噪声干扰 跟踪干扰 通信可靠性 

分 类 号：TN914.41[电子电信—通信与信息系统]