基于LFM分段脈沖壓縮的抗間歇采樣轉(zhuǎn)發(fā)干擾方法

張建中; 穆賀強(qiáng); 文樹(shù)梁; 李彥兵; 高紅衛(wèi)

doi:10.11999/JEIT180851

基于LFM分段脈沖壓縮的抗間歇采樣轉(zhuǎn)發(fā)干擾方法

doi: 10.11999/JEIT180851

1.
北京無(wú)線電測(cè)量研究所 ??北京 ??100854
2.
中國(guó)航天科工集團(tuán)第二研究院 ??北京 ??100854

詳細(xì)信息

作者簡(jiǎn)介:
張建中：男，1985年生，博士生，研究方向?yàn)槔走_(dá)電子對(duì)抗，波形設(shè)計(jì)，陣列信號(hào)處理

穆賀強(qiáng)：男，1967年生，研究員，主要研究方向?yàn)槔走_(dá)總體設(shè)計(jì)，雷達(dá)電子對(duì)抗，雷達(dá)信號(hào)處理

文樹(shù)梁：男，1971年生，研究員，博士生導(dǎo)師，主要研究方向?yàn)槔走_(dá)總體設(shè)計(jì)，雷達(dá)信號(hào)處理

通訊作者:
張建中　zhang.jianzhong@163.com

中圖分類(lèi)號(hào): TN974
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- 文章訪問(wèn)數(shù): 2786
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-08-31
- 修回日期: 2019-01-21
- 網(wǎng)絡(luò)出版日期: 2019-02-14
- 刊出日期: 2019-07-01

Anti-Intermittent Sampling Repeater Jamming Method Based on LFM Segmented Pulse Compression

1.
Beijing Institution of Radio Measurement, Beijing 100854, China
2.
The Second Academy of China Aerospace Science and Industry Corporation, Beijing 100854, China

摘要

摘要: 得益于數(shù)字儲(chǔ)頻技術(shù)的快速發(fā)展，間歇采樣轉(zhuǎn)發(fā)干擾(ISRJ)得到廣泛應(yīng)用，現(xiàn)有抗干擾方法尚無(wú)法有效對(duì)抗此種干擾。在深入研究ISRJ的基礎(chǔ)上，針對(duì)其時(shí)域采樣不連續(xù)的特點(diǎn)，該文提出一種基于LFM分段脈沖壓縮的抗間歇采樣干擾方法。該方法利用LFM分段信號(hào)之間的正交性，結(jié)合掩護(hù)波形的思想，通過(guò)窄帶濾波器組對(duì)干擾和目標(biāo)進(jìn)行分選，然后剔除干擾，最后在脈內(nèi)和脈間進(jìn)行積累。理論分析和仿真結(jié)果表明，分段脈沖壓縮方法能有效對(duì)抗多干擾機(jī)情況下不同樣式的間歇采樣干擾組合。
- 間歇采樣 /
- 分段脈沖壓縮 /
- 抗干擾方法 /
- 窄帶濾波器組
Abstract: Benefiting from the rapid development of digital frequency storage technology, the Intermittent Sampling Repeater Jamming(ISRJ) is widely used. Existing radar anti-jamming means are hard to against this jamming effectively. Based on the analysis of the principles of the ISRJ, for the discontinuities of ISRJ in time domain, an anti-ISRJ method based on LFM segmented pulse compression is proposed. This method utilizes the orthogonality between LFM segmented signals, combines with cover waveform concept, distinguishes jamming and target through narrow band filter group, then suppresses jamming, finally accumulates signals in intra-pulse and inter-pulse. Theoretical analysis and experimental results show the anti-ISRJ method can effectively resist the intermittent sampling interference which combines with different styles of multiple jammers.
- Intermittent sampling /
- Segmented pulse Compression /
- Anti-jamming method /
- Narrow band filter group

HTML全文

圖 1 間歇采樣轉(zhuǎn)發(fā)干擾模型框圖

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圖 2 LFM信號(hào)分段表示

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圖 3 不同M值LFM分段掩護(hù)效果圖

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圖 4 分段脈沖壓縮抗干擾信號(hào)流程圖

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圖 5 不同分段干擾抑制后剩余子段積累結(jié)果圖

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圖 6 M=10和M=20本文算法單干擾機(jī)分段脈沖壓縮抗干擾效果

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圖 7 文獻(xiàn)[12]算法單干擾機(jī)抗干擾效果

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圖 8 兩干擾機(jī)分段脈壓效果圖

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圖 9 兩干擾機(jī)非同步采樣脈間相參積累分段脈沖壓縮抗干擾效果圖

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圖 10 不同M值輸出SINR圖

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