雷达干扰系统仿真研究

【作者】 谈江海；

【导师】 陈天麒；

【作者基本信息】 电子科技大学 ， 通信与信息系统， 2005， 硕士

【摘要】 电子战在现代战争中发挥着越来越重要的作用。而电子干扰技术是电子对抗技术中的重要组成部分之一。本文着重对雷达干扰技术仿真进行了研究,为雷达对抗及其效能评估研究奠定基础。文中重点讨论了有源压制式干扰系统和欺骗式干扰系统,并主要从干扰技术的产生和功率管理系统两大部分进行研究。在有源压制式干扰系统中,主要研究了射频噪声干扰、调幅噪声干扰以及调频噪声干扰系统。讨论了各种干扰信号的产生并进行了仿真分析,同时对相应的干扰系统进行了详细的分析。在欺骗式干扰系统中,主要研究了距离欺骗干扰、速度欺骗干扰和角度欺骗干扰系统的各种欺骗信号的产生,同时进行了干扰系统相关分析。在雷达干扰系统众多组成中,本文主要研究了两大关键技术:数字射频存储技术(DRFM)和频率引导技术。在DRFM 中,对其原理结构进行了仿真分析,并主要从幅度量化的角度分析了各种寄生信号的影响。仿真分析表明,当量化位数达到八位及以上时,寄生信号的影响基本可以忽略。在目前频率引导技术发展的基础上,讨论了一种将数字式瞬时测频技术(DIFM)、数字频率引导、超外差频率引导技术相结合的一种新的快速频率引导技术。同时对相关技术指标进行分析。结果表明,这种技术在具有较快引导时间和较高引导精度。在功率管理系统众多内容中,本文着重讨论了一种基于运筹学方法的雷达干扰资源分配算法。试验表明,该算法是可行的、有效的。本文较为详细地研究了有源压制式干扰系统和欺骗式干扰系统的多种干扰信号的产生方法,建立了仿真系统。对阻塞式干扰、瞄准式干扰、距离欺骗干扰、速度欺骗干扰、距离-速度同步干扰等多种干扰样式的产生进行了详细的仿真。更多还原

【Abstract】 The electronic war is playing more and more important role in the modern war.And the electronic jamming is one of the important techniques in the flied of theelectronic countermeasure. This paper has mainly researched techniques about theradar system countermeasure technology.Firstly, this paper has mainly discussed the active jamming system and thedeception jamming system, and made some research about the two main parts whichare the design of the jamming techniques and power management system. In the firstpart, the emphasis is played on research of the radio noise system, amplitudemodulation system and frequency modulation system. And discussed the productionof some kinds of jamming signals, also made some simulations, in addition, theproper jamming systems has been designed and analyzed. In the second part, thepaper has discussed the methods about the production of the deception jammingsignals from the distance deception jamming system, speed deception jammingsystem as well as the angle deception system, in addition, the frame of the jammingsystems are given and some analysis are made.Secondly, the paper has mainly made some research about the two keytechniques which are digit radio frequency memory techniques and the frequencyleading techniques in the radar jamming system. In the first part, some simulationsare made about the its principle, and the paper has analyzed all kinds of the parasiticsignals according to method of the amplitude quantization. The result indicated thatthe affect of the parasitic signals could be neglected when number of the quantizationis not less than eight. On the basis of the frequency leading techniques at presents, thepaper has discussed a new method which includes DIFM, digit frequency leading anddifference frequency leading technology. The result indicated that this techniques hasthe quick leading time and high leading precision.The paper has also discussed a algorithm of radar jamming resources assignmentbased on the Operation Research in the field of the power management system. Theresult of the simulation indicated that this algorithm is feasible and efficient, it alsohas some advantages over other algorithms.At last, the paper designed a system which was used in the emulators about theactive jamming system and the deception jamming system. and made someexperiments about the production of various jamming signals included barragejamming signal, distance deception jamming signal speed deception jamming signal.更多还原