本文選題：外輻射源雷達(dá) + 同頻干擾　； 參考：《西安電子科技大學(xué)學(xué)報(bào)》2017年06期

【摘要】：在外輻射源雷達(dá)中,尤其是全球移動(dòng)通信信號(hào)輻射源雷達(dá)中,不僅存在很強(qiáng)的直達(dá)波和多路徑干擾,同時(shí)還存在著來自同頻基站的同頻干擾.在沒有干擾樣本的情況下,很難單獨(dú)利用時(shí)域相消的方法抑制同頻干擾.針對(duì)回波通道中含有同頻干擾的問題,提出了一種外輻射源雷達(dá)同頻干擾的抑制方法.首先利用低副瓣空域?yàn)V波消除遠(yuǎn)區(qū)的弱干擾,同時(shí)對(duì)近區(qū)的強(qiáng)干擾進(jìn)行一定程度的抑制;然后利用時(shí)域干擾對(duì)消算法抑制來自主基站的直達(dá)波及多徑干擾;最后利用穩(wěn)健的自適應(yīng)波束形成方法對(duì)剩余的干擾進(jìn)行抑制.理論分析與計(jì)算機(jī)仿真實(shí)驗(yàn)表明,該方法具有良好的干擾抑制性能和較低的運(yùn)算量.
[Abstract]:In the external emitter radar, especially in the global mobile communication signal emitter radar, there is not only strong direct wave and multipath interference, but also co-frequency interference from the same frequency base station. In the absence of interference samples, it is difficult to suppress the same frequency interference by using time domain cancellation alone. Aiming at the problem of co-frequency interference in echo channel, a method for suppressing the co-frequency interference of external emitter radar is proposed. The low sidelobe spatial filtering is used to eliminate the weak interference in the far region and the strong interference in the near region is suppressed to a certain extent, and the time domain interference cancellation algorithm is used to suppress the direct and multipath interference from the main base station. Finally, robust adaptive beamforming method is used to suppress the remaining interference. Theoretical analysis and computer simulation experiments show that the proposed method has good interference suppression performance and low computational complexity.
【作者單位】： 西安電子科技大學(xué)雷達(dá)信號(hào)處理國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家部委基金資助項(xiàng)目(9140A07020614DZ01) 國家自然科學(xué)基金資助項(xiàng)目(61401526)
【分類號(hào)】：TN958
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本文編號(hào)：2019921