本文選題：數(shù)字干擾合成 + 射頻噪聲干擾��； 參考：《西安電子科技大學(xué)》2014年碩士論文

【摘要】：電子干擾技術(shù)作為電子對抗技術(shù)的重要組成部分,在現(xiàn)代戰(zhàn)爭中發(fā)揮著越來越重要的作用。隨著雷達(dá)技術(shù)的迅速發(fā)展,雷達(dá)抗干擾性不斷提高,傳統(tǒng)雷達(dá)干擾合成技術(shù)的干擾效果嚴(yán)重降低。利用數(shù)字方法產(chǎn)生干擾信號(hào)較傳統(tǒng)的模擬方法具有易于控制、精度高以及易于采用超大規(guī)模集成方式進(jìn)行制造等優(yōu)點(diǎn)。數(shù)字干擾合成技術(shù)能產(chǎn)生最佳的干擾信號(hào),可以對新體制雷達(dá)和多威脅信號(hào)造成有效干擾。本文以壓制干擾的最佳干擾波形——與雷達(dá)信號(hào)同帶寬的射頻噪聲干擾波形為研究對象,以數(shù)字干擾合成DJS為干擾波形合成技術(shù)。首先介紹了DJS干擾合成的基本原理,并詳細(xì)闡述了典型的DJS壓制干擾、欺騙干擾以及復(fù)合干擾的合成方法;然后根據(jù)射頻噪聲干擾特性,研究利用DJS技術(shù)合成干擾信號(hào)波形時(shí)的基帶信號(hào)、基帶信號(hào)讀取方式以及數(shù)字變頻技術(shù)等,進(jìn)行合成數(shù)字射頻噪聲干擾信號(hào);接著利用DJS技術(shù)對多路噪聲干擾信號(hào)波形進(jìn)行合成仿真,以生成可以同時(shí)干擾多威脅信號(hào)的數(shù)字噪聲干擾信號(hào);然后在分析線性調(diào)頻脈壓信號(hào)的基礎(chǔ)上,做了關(guān)于傳統(tǒng)射頻噪聲干擾信號(hào)以及基于DJS合成的射頻噪聲干擾信號(hào)對LFM信號(hào)干擾效果的仿真研究;最后針對合成噪聲信號(hào)的峰均比過高的問題,提出用限幅技術(shù)進(jìn)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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN974

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