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一種有源加性復合干擾的對抗算法研究
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(空軍工程大學(xué) 航空航天工程學(xué)院, 西安 710038)

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任鵬沖(1989-),男,河南駐馬店人,碩士研究生,主要從事雷達電子對抗方向的研究。 葉廣強(1972-),男,山東青島人,副教授,碩士研究生導師,主要從事雷達電子偵察方向的研究。 [FQ)]

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航空科學(xué)基金資助項目(20145596024)。


An Algorithm Research For Restraining Active Additive Compound Jamming 
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(Aeronautics And Astronautics Engineering College, Air Force Engineering University, Xi'an 710038,China)

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    摘要:

    針對雷達有源加性復合干擾對抗的情況,傳統的抗干擾算法只針對單一樣式干擾進(jìn)行抑制,很難做到有效權衡;由于有源復合干擾噪聲功率高、欺騙性強的特點(diǎn),為此提出了一種基于相位擾動(dòng)的有源加性復合干擾對抗算法,該算法在斜變線(xiàn)性調頻信號(SV LFM)信號的基礎上,先對發(fā)射雷達信號的前后沿脈沖附加上一個(gè)擾動(dòng)的相位,再通過(guò)與前一脈沖的匹配濾波,限幅處理和逆匹配,最后與當前脈沖進(jìn)行匹配濾波處理,附加擾動(dòng)的相位和限幅處理減弱了距離假目標信號的增益,而經(jīng)過(guò)三次匹配濾波的作用,同樣有效的削弱了大部分壓制性干擾信號的成分,從而恢復出比較純凈的目標回波信號;通過(guò)實(shí)驗仿真手段驗證了相位擾動(dòng)抗干擾算法的有效性,與傳統直接匹配濾波的抗干擾算法相比,接收信號的信噪比提升了約25 dB。

    Abstract:

    According to the restraining active additive compound jamming, traditional anti-jamming algorithm is difficult for balancing it with only restraining single jamming. Because of the feature of high noise power and hard deception, an algorithm for restraining active additive compound jamming based on phase-perturbed is studied. Based on the slope-varying LFM , the algorithm add a phase-perturbed to the pulse edge of front or back from the radar transmitting signal. Furthermore, a pulse match filter With the front pulse edge is used, then the results are given a “punish” and anti-match filter. The phase-perturbed and processing of amplitude limit weaken the signal gain of distance deception jamming, and also recede the signal gain of most blocking jamming under the three match filter. Finally, the echo signal can be restored from the previous pulse matched filter. The effectiveness of the phase perturbation anti-jamming algorithm was verified through the experimental simulation method. Compared with the traditional direct anti-jamming algorithm of matched filter, the signal-to-noise ratio of the received signal was improved about 25 dB.

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任鵬沖,葉廣強,劉華偉.一種有源加性復合干擾的對抗算法研究計算機測量與控制[J].,2016,24(1):284-288.

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  • 收稿日期:2015-08-27
  • 最后修改日期:2015-08-31
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  • 在線(xiàn)發(fā)布日期: 2016-07-26
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