空域自適應(yīng)抗干擾在數(shù)據(jù)鏈通信中的應(yīng)用
發(fā)布時間:2018-05-18 01:10
本文選題:數(shù)據(jù)鏈 + 抗干擾; 參考:《計算機(jī)應(yīng)用》2017年06期
【摘要】:針對戰(zhàn)場復(fù)雜電磁環(huán)境下數(shù)據(jù)鏈系統(tǒng)容易受到干擾導(dǎo)致通信互聯(lián)互通能力下降的問題,提出了一種將智能天線陣空域陷波技術(shù)和數(shù)據(jù)鏈相對定位技術(shù)綜合應(yīng)用的抗干擾方法,來輔助提升系統(tǒng)的通信抗干擾能力。該方法通過數(shù)據(jù)鏈相對定位獲取期望信號的來波方向,并對多天線陣列進(jìn)行輻射方向圖自主重構(gòu),實現(xiàn)在通信信號方向保持增益恒定且在干擾信號方向形成零陷的目標(biāo),達(dá)到干擾信號抑制的目的。在實驗室環(huán)境下基于軟件無線電平臺對所提方法進(jìn)行了仿真驗證,實驗結(jié)果表明,該方法可以提升40 dB以上的系統(tǒng)干擾抑制能力。該方法將數(shù)據(jù)鏈抗干擾手段從傳統(tǒng)的時/頻域拓展到空域,可以應(yīng)用于相關(guān)系統(tǒng)抗干擾。
[Abstract]:In view of the problem that the ability of communication interconnection is decreased due to the interference of the data link system in the complex electromagnetic environment of battlefield, this paper presents an anti-jamming method which integrates the spatial notch technology of intelligent antenna array and the relative positioning technology of data link. To help enhance the system's communication anti-jamming capability. In this method, the direction of the desired signal is obtained by the relative location of the data link, and the radiation pattern of the multi-antenna array is reconstructed autonomously to achieve the goal of maintaining a constant gain in the direction of the communication signal and forming a zero trapping in the direction of the interference signal. The interference signal suppression is achieved. The simulation results show that the proposed method can improve the system interference suppression capability of more than 40 dB in the laboratory environment based on the software radio platform. This method extends the data link anti-jamming method from the traditional time / frequency domain to the airspace, and can be applied to the anti-jamming of related systems.
【作者單位】: 中國西南電子技術(shù)研究所;
【基金】:抗干擾技術(shù)國防科技重點實驗室基金資助項目(9140C020203150C02008)~~
【分類號】:TN97
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