一種基于中心矩的波束形成算法
發(fā)布時間:2018-12-15 16:38
【摘要】:高分辨水下目標(biāo)探測一直是水聲信號處理中的重要課題之一.然而許多高分辨算法如MUSIC,ESPRIT需要對信源數(shù)進(jìn)行預(yù)估,估計(jì)的精確度對算法性能影響很大,制約了算法的實(shí)用性.本文提出了一種新的高分辨方位估計(jì)算法,中心矩波束形成算法.該方法利用了加權(quán)基元信號的各階中心矩,無需先驗(yàn)信息.本文詳細(xì)論述了中心矩波束形成算法的原理,對比其他算法指出了該算法性能上的優(yōu)勢.計(jì)算機(jī)仿真實(shí)驗(yàn)表明:中心矩波束形成算法擁有良好的分辨率和旁瓣級,與理論分析的結(jié)論一致.
[Abstract]:High resolution underwater target detection is one of the most important subjects in underwater acoustic signal processing. However, many high-resolution algorithms, such as MUSIC,ESPRIT, need to estimate the number of sources, and the accuracy of estimation has a great impact on the performance of the algorithm, which restricts the practicability of the algorithm. In this paper, a new high resolution azimuth estimation algorithm, the center moment beamforming algorithm, is proposed. The method makes use of the central moments of the weighted primitive signal without prior information. In this paper, the principle of the center moment beamforming algorithm is discussed in detail, and the advantages of the algorithm are pointed out compared with other algorithms. The computer simulation results show that the central moment beamforming algorithm has good resolution and sidelobe level, which is consistent with the theoretical analysis.
【作者單位】: 哈爾濱工程大學(xué)水聲技術(shù)重點(diǎn)實(shí)驗(yàn)室;哈爾濱工程大學(xué)水聲工程學(xué)院;
【基金】:國家自然科學(xué)基金(No.51279033) 黑龍江省自然科學(xué)基金(No.F201346)
【分類號】:TN911.7
[Abstract]:High resolution underwater target detection is one of the most important subjects in underwater acoustic signal processing. However, many high-resolution algorithms, such as MUSIC,ESPRIT, need to estimate the number of sources, and the accuracy of estimation has a great impact on the performance of the algorithm, which restricts the practicability of the algorithm. In this paper, a new high resolution azimuth estimation algorithm, the center moment beamforming algorithm, is proposed. The method makes use of the central moments of the weighted primitive signal without prior information. In this paper, the principle of the center moment beamforming algorithm is discussed in detail, and the advantages of the algorithm are pointed out compared with other algorithms. The computer simulation results show that the central moment beamforming algorithm has good resolution and sidelobe level, which is consistent with the theoretical analysis.
【作者單位】: 哈爾濱工程大學(xué)水聲技術(shù)重點(diǎn)實(shí)驗(yàn)室;哈爾濱工程大學(xué)水聲工程學(xué)院;
【基金】:國家自然科學(xué)基金(No.51279033) 黑龍江省自然科學(xué)基金(No.F201346)
【分類號】:TN911.7
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 徐曉男;馬啟明;杜栓平;;波束空間能量約束的穩(wěn)健自適應(yīng)波束形成[J];聲學(xué)學(xué)報;2013年03期
【共引文獻(xiàn)】
相關(guān)期刊論文 前10條
1 王登偉;呂英華;張博;劉兵;;基于光纖無線電的優(yōu)化自適應(yīng)波束形成算法[J];半導(dǎo)體光電;2007年05期
2 趙紅;劉橋;;一種低旁瓣的子陣級數(shù)字波束形成方法[J];兵工自動化;2009年11期
3 楊小明;陶然;;基于分?jǐn)?shù)階Fourier變換和ESPRIT算法的LFM信號2D波達(dá)方向估計(jì)[J];兵工學(xué)報;2007年12期
4 梁國龍;張鍇;付進(jìn);張瑤;李利;;單矢量水聽器的高分辨方位估計(jì)應(yīng)用研究[J];兵工學(xué)報;2011年08期
5 盧海杰;章新華;熊鑫;;流形分離在非均勻圓陣上的應(yīng)用[J];兵工學(xué)報;2011年09期
6 譚淵;楊勇;袁乃昌;;超分辨譜估計(jì)法在測速雷達(dá)中的應(yīng)用[J];兵工學(xué)報;2011年11期
7 卞紅雨;王s,
本文編號:2380971
本文鏈接:http://sikaile.net/kejilunwen/wltx/2380971.html
最近更新
教材專著