【摘要】：針對強(qiáng)干擾嚴(yán)重影響線列陣聲納弱目標(biāo)檢測的問題,融合盲源分離(Blind source separation,BSS)與波束形成提出了一種抑制方向性強(qiáng)干擾的方法.首先在干擾方位形成波束得到干擾信號(hào)估計(jì),然后對陣列接收信號(hào)的每個(gè)子帶采用盲源分離方法得到分離信號(hào)和解混矩陣估計(jì),并通過對分離信號(hào)和干擾信號(hào)進(jìn)行子帶譜相關(guān)抑制干擾,再將抑制干擾后的分離信號(hào)重構(gòu)回陣元域信號(hào),最后采用波束形成方法完成目標(biāo)方位估計(jì).利用模擬器數(shù)據(jù)和海試數(shù)據(jù)對方法進(jìn)行了驗(yàn)證,結(jié)果表明,該方法能有效地抑制方向性強(qiáng)干擾,明顯提高了弱目標(biāo)信號(hào)的空間譜能量,增強(qiáng)了聲納檢測弱目標(biāo)的能力.
[Abstract]:Aiming at the problem that strong interference seriously affects the detection of weak targets in linear array sonar, a method of suppressing directional strong interference is proposed by combining blind source separation (Blind source separation,BSS) with beamforming. First, the interference signal is estimated by beamforming at interference azimuth, and then each subband of the received signal of the array is estimated by blind source separation method. The separated signal is reconstructed by subband spectral correlation to suppress the interference. Finally, the beamforming method is used to estimate the target azimuth. The simulation data and sea test data are used to verify the method. The results show that the method can effectively suppress the strong directional interference, improve the spatial spectral energy of the weak target signal, and enhance the ability of sonar to detect the weak target.
【作者單位】： 海軍大連艦艇學(xué)院信息作戰(zhàn)系水聲與水聲對抗教研室;
【基金】：聲納技術(shù)國家級重點(diǎn)實(shí)驗(yàn)室開放基金資助(KF201106)~~
【分類號(hào)】：TN973

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 康春玉;曹濤;章新華;;拖船噪聲對拖線陣聲吶DOA估計(jì)性能的影響[J];艦船科學(xué)技術(shù);2011年01期

2 馬遠(yuǎn)良,鄢社鋒,楊坤德;匹配場噪聲抑制:原理及對水聽器拖曳線列陣的應(yīng)用[J];科學(xué)通報(bào);2003年12期

3 康春玉;章新華;韓東;;一種基于盲源分離的DOA估計(jì)方法[J];自動(dòng)化學(xué)報(bào);2008年10期

4 康春玉;章新華;韓東;;盲源分離與高分辨融合的DOA估計(jì)與信號(hào)恢復(fù)方法[J];自動(dòng)化學(xué)報(bào);2010年03期

5 章新華;范文濤;康春玉;高成志;韓東;許策;;波束形成與獨(dú)立分量分析融合的寬帶高分辨方位估計(jì)方法[J];聲學(xué)學(xué)報(bào)(中文版);2009年04期

6 李嶷;陳新華;孫長瑜;衛(wèi)闌，

本文編號(hào)：2230870