多路DJS射频噪声干扰波形合成技术研究

发布时间：2018-06-15 10:00

本文选题：数字干扰合成 + 射频噪声干扰　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：电子干扰技术作为电子对抗技术的重要组成部分,在现代战争中发挥着越来越重要的作用。随着雷达技术的迅速发展,雷达抗干扰性不断提高,传统雷达干扰合成技术的干扰效果严重降低。利用数字方法产生干扰信号较传统的模拟方法具有易于控制、精度高以及易于采用超大规模集成方式进行制造等优点。数字干扰合成技术能产生最佳的干扰信号,可以对新体制雷达和多威胁信号造成有效干扰。本文以压制干扰的最佳干扰波形——与雷达信号同带宽的射频噪声干扰波形为研究对象,以数字干扰合成DJS为干扰波形合成技术。首先介绍了DJS干扰合成的基本原理,并详细阐述了典型的DJS压制干扰、欺骗干扰以及复合干扰的合成方法;然后根据射频噪声干扰特性,研究利用DJS技术合成干扰信号波形时的基带信号、基带信号读取方式以及数字变频技术等,进行合成数字射频噪声干扰信号;接着利用DJS技术对多路噪声干扰信号波形进行合成仿真,以生成可以同时干扰多威胁信号的数字噪声干扰信号;然后在分析线性调频脉压信号的基础上,做了关于传统射频噪声干扰信号以及基于DJS合成的射频噪声干扰信号对LFM信号干扰效果的仿真研究;最后针对合成噪声信号的峰均比过高的问题,提出用限幅技术进行改善峰均比。
[Abstract]:As an important part of electronic countermeasures technology, electronic jamming technology plays a more and more important role in modern warfare. With the rapid development of radar technology, the anti-jamming performance of radar is constantly improved, and the interference effect of traditional radar jamming synthesis technology is seriously reduced. It has the advantages of easy control, high precision, and easy to use in large scale integration. The digital jamming synthesis technology can produce the best interference signal, and can cause effective interference to the new system radar and the multi threat signal. This paper is based on the best jamming waveform of the jamming, the radio frequency noise dry with the same bandwidth with the radar signal. The disturbance waveform is the research object, using the digital interference to synthesize DJS as the interference waveform synthesis technology. First, the basic principle of DJS interference synthesis is introduced, and the typical synthetic methods of the typical DJS suppression interference, deception jamming and compound interference are described in detail. Then, according to the specificity of the radio frequency noise interference, the interference signal waveform is synthesized by using the DJS technology. The baseband signal, the reading way of the baseband signal and the digital frequency conversion technology are used to synthesize the digital radio frequency noise interference signal, and then the DJS technology is used to synthesize the multichannel noise interference signal to generate the digital noise interference signal which can interfere with the multi threat signal simultaneously; then the base of the linear frequency modulation pulse pressure signal is analyzed. At the same time, the simulation research on the interference effect of the traditional radio frequency noise jamming signal and the radio frequency noise jamming signal based on DJS synthesis is done. Finally, aiming at the problem that the peak to peak ratio of the synthetic noise signal is too high, the amplitude limiting technique is proposed to improve the peak to average ratio.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN974

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