自适应跳频系统抗部分频带干扰性能分析  

Analysis of the Anti-jamming Capabilities in the Adaptive Frequency-hopping

作　　者：张怡[1] 曾婧[1] 薛喆[1] 

机构地区：[1]西北工业大学电子信息学院,西安710129

出　　处：《弹箭与制导学报》2010年第1期179-181,共3页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：航空科学基金(20085553016);西北工业大学研究生创业种子基金(W016646)资助

摘　　要：由于部分频带干扰对跳频通信系统危害最为严重,而自适应性的引入将大大改善跳频系统的抗干扰能力。文中在常规跳频系统的基础上给出了一种自适应跳频系统,通过介绍自适应跳频系统原理,引入了双态信道模型,分析了在部分频带干扰条件下系统的误码率。在Matlab平台上对文中所给系统的性能进行仿真,并与常规跳频系统进行对比。仿真结果表明该系统能够自适应的去除干扰频点,调整跳频图案,从而使得抗干扰性能得以改善。在阻塞率为0.2时,自适应跳频系统的误码率仅为常规系统的百分之一,能够有效抵抗部分频带干扰的影响。The adaptive frequency-hopping system has good anti-jamming capabilities, so it＇s increasingly used in short-wave communication. In the thesis, firstly, it introduces the AFH, which is basis of conventional FH, and analyses BER under the partialband noise jamming. Secondly, it simulates the AFH system on the Matlah platform and compares the result with conventional FH＇ s. It＇s easy to see that the AFH system can remove the frequency interference and adjust FH patterns to improve the capabilities of the anti-jamming. Especially, when the blocking rate is 0.2, the BER of the AFH system is only the one percent of conventional FH＇s, in other words, its anti-jamming capabilities is efficacious.

关 键 词：跳频系统 部分频带干扰 自适应性 

分 类 号：TN911.3[电子电信—通信与信息系统]