【摘要】：隨著陣列信號處理與語音處理在雷達、聲納及無線通信等眾多軍事及國民經濟領域應用中的不斷發(fā)展，陣列拓撲結構與聲源二維DOA估計等方面的研究，尤其是前者對后者的性能影響越來越受到人們的重視。根據陣列信號處理的理論，陣列拓撲結構對陣列處理系統(tǒng)的性能具有重要影響。因此，以二維DOA估計為切入點，開展陣列優(yōu)化拓撲結構的研究具有重要的科學意義和應用價值。 在綜述國內外相關陣列拓撲結構及其相關DOA估計技術研究進展的基礎上，論文首先給出了聲源定位中陣列拓撲研究的基礎理論和基礎實驗分析；系統(tǒng)研究了均勻線陣、嵌套線陣、均勻L型陣、矩形陣、圓陣和同心圓陣等不同拓撲結構及其陣列方向向量；詳細分析了MUSIC、Capon和ESPRIT等經典的二維DOA估計方法；給出了相應的陣列波束圖和空間譜圖的仿真結果。其次，論文介紹了陣列優(yōu)化設計中的優(yōu)化算法的理論基礎，系統(tǒng)闡述了遺傳算法的基本原理和實際中關鍵參數的優(yōu)化選擇。 考慮到陣列拓撲結構的優(yōu)化方法可以分為兩種：一種是優(yōu)化各個陣元位置，進而校正陣元坐標；另一種是優(yōu)化陣元個數，保留的陣元位置不變，論文利用遺傳算法對陣列拓撲結構中陣元個數進行優(yōu)化，通過構造由二維MUSIC空間譜函數歐式距離和優(yōu)化后陣元個數共為變量的適應度函數，聲源2-D DOA估計精度為停止條件，采用經典的二維MUSIC算法，對均勻L型陣、均勻矩形陣、均勻圓形陣和均勻同心圓陣等麥克風陣列進行了優(yōu)化仿真設計。仿真實驗結果表明，與其他陣列相比，論文方法所得到的優(yōu)化陣列拓撲結構，能夠較準確的估計出聲源的來波方向，且能節(jié)省一定數目的陣元。
[Abstract]:With the development of array signal processing and speech processing in many fields of military and national economy, such as radar, sonar and wireless communication, the research of array topology and two-dimensional DOA estimation of sound source, etc. Especially, the influence of the former on the performance of the latter has been paid more and more attention. According to the theory of array signal processing, array topology has an important effect on the performance of array processing system. Therefore, the research of array optimization topology based on two-dimensional DOA estimation has important scientific significance and application value. On the basis of summarizing the research progress of related array topology structure and related DOA estimation technology at home and abroad, the basic theory and experimental analysis of array topology research in acoustic source location are presented in this paper. Different topologies such as uniform linear array, nested linear array, uniform L-type array, rectangular array, circular array and concentric circular array and their array direction vectors are systematically studied, and classical two-dimensional DOA estimation methods such as MUSIC,Capon and ESPRIT are analyzed in detail. The simulation results of the array beam map and the spatial spectrum diagram are given. Secondly, the paper introduces the theoretical basis of the optimization algorithm in array optimization design, and expounds the basic principle of genetic algorithm and the optimization of key parameters in practice. Considering the array topology optimization methods can be divided into two types: one is to optimize the location of each element and then to correct the coordinates of array elements; The other is to optimize the number of array elements and keep the position of the array elements unchanged. The genetic algorithm is used to optimize the number of elements in the array topology. By constructing the fitness function from the Euclidean distance of two-dimensional MUSIC space spectrum function and the number of optimized array elements as variables, and the accuracy of 2-D DOA estimation of sound source as stopping condition, the classical two-dimensional MUSIC algorithm is used for uniform L-type matrix and uniform rectangular array. The microphone arrays such as uniform circular array and uniform concentric circular array are optimized and designed. The simulation results show that compared with other arrays, the optimized array topology obtained by the proposed method can accurately estimate the direction of the acoustic source and save a certain number of array elements.
【學位授予單位】：遼寧工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN912.3

【參考文獻】

相關期刊論文 前10條

1 刁鳴;王月瑜;司錫才;;基于MUSIC算法的二維DOA估計的性能分析[J];彈箭與制導學報;2004年S7期

2 石新智,王高峰,文必洋;修正MUSIC算法對非線性陣列適用性的討論[J];電子學報;2004年01期

3 康春梅,袁業(yè)術;用MUSIC算法解決海雜波背景下相干源探測問題[J];電子學報;2004年03期

4 王冬霞;殷福亮;陳哲;;麥克風陣列時延估計的Cramér-Rao界限[J];電子學報;2008年12期

5 楊維,李歧強;粒子群優(yōu)化算法綜述[J];中國工程科學;2004年05期

6 刁鳴;王艷溫;;基于任意形狀平面陣列的二維測向技術研究[J];哈爾濱工程大學學報;2006年04期

7 徐洪澤，，陳桂林，張福恩;遺傳算法的單雙點雜交方法對比研究[J];哈爾濱工業(yè)大學學報;1998年02期

8 劉孝剛;呂久明;李東亮;劉蓮霞;;基于圓陣的二維DOA估計新方法[J];火力與指揮控制;2008年12期

9 辛淵博;侯宏;陳志菲;陳濤;;遺傳算法用于波達方向估計的圓陣稀疏優(yōu)化[J];計算機仿真;2011年03期

10 夏菲;陶海紅;李軍;;基于改進遺傳算法的非均勻稀布陣列優(yōu)化[J];雷達科學與技術;2009年06期

本文編號：2304217