本文選題：互素陣　切入點(diǎn)：孔徑擴(kuò)展　出處：《艦船科學(xué)技術(shù)》2016年23期 　論文類型：期刊論文

【摘要】：物理陣元數(shù)一定的情況下,通過(guò)孔徑擴(kuò)展虛擬出大孔徑的方法可以提高目標(biāo)方向估計(jì)的分辨率。本文提出使用基于互素陣的孔徑擴(kuò)展方法,該方法基于互素定理,通過(guò)滿足一定規(guī)則的非均勻布陣,使用兩物理存在陣元接收到的信號(hào)虛擬出一新的陣元,如此將此非均勻陣列擴(kuò)展為孔徑較大的均勻線陣,然后進(jìn)行目標(biāo)波達(dá)方向估計(jì)。仿真和水池試驗(yàn)表明該孔徑擴(kuò)展方法可以顯著地提高空間分辨率,以及能夠得到更低的旁瓣級(jí),顯然能節(jié)省物理陣元,對(duì)工程應(yīng)用來(lái)說(shuō)能降低成本,所以具有良好的應(yīng)用前景。
[Abstract]:The resolution of target direction estimation can be improved by using the method of virtual large aperture of physical array when the number of elements is fixed. In this paper, a method of aperture expansion based on cross-prime matrix is proposed, which is based on the reciprocal prime theorem. By using the non-uniform array with certain rules, a new array element is created by using the signals received by the two physical existential elements, so that the non-uniform array is extended to a uniform linear array with large aperture. Then the DOA estimation of the target is carried out. Simulation and tank experiments show that the proposed method can significantly improve the spatial resolution and obtain lower sidelobe levels, which obviously saves physical array elements. It can reduce the cost of engineering application, so it has a good application prospect.
【作者單位】： 西北工業(yè)大學(xué)航海學(xué)院;
【分類號(hào)】：TN911.7
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本文編號(hào)：1570870