AGWN信道中相关干扰对JTIDS接收机干扰效果分析

Effect analysis of using correlation jamming to jam JTIDS in AGWN channel

相关干扰是目前研究的对抗联合战术信息分发系统(JTIDS)比较有效的干扰样式,文中主要针对相关干扰对JTIDS接收机的干扰效果问题进行了深入研究。在建立了AGWN信道中相关干扰下JTIDS接收机模型的基础上,推导了接收机输出误比特率公式,并通过仿真和分析,得到了不同信噪比条件下接收机的最佳检测门限值以及误比特率与干信比的关系曲线,最后研究了干扰频偏对干扰效果的影响。研究表明,相关干扰对JTIDS接收机有着良好的干扰效果,并且对干扰频偏敏感。

Using correlation jamming to jam Joint Tactical Information Distribution System （JTIDS） is considered to be effectual. A profound study on the jamming effect of using correlation jamming to jam JTIDS was made. Based on the modeling of JTIDS receivers working in the additive gaussian white noise （AGWN） channel and being jammed by correlation jamming, the error bit rate （EBR） for- mula was derived. And then, through simulation and analysis, the optimum detection threshold, as well as the relation curve between EBR and jamming-to-signal ratio （JSR）, was put forward in dif- ferent SNRconditions. At last, the influence of jamming frequency-offset to jamming effect was re- searched. The paper indicates that correlation jamming has a good performance in jamming JTIDS and is hypersensitive to jamming frequency-offset.