基于NYSTR(?)M近似的DOA估計方法
發(fā)布時間:2021-04-08 19:20
隨著現(xiàn)代信息技術(shù)的快速發(fā)展,信號處理的研究和應(yīng)用引起了廣泛的關(guān)注。陣列信號處理作為信號處理的重要分支,廣泛應(yīng)用于雷達(dá),聲納,通信,醫(yī)學(xué)等軍事和民用領(lǐng)域。陣列信號處理即為以一定方式布置一系列天線元件以形成天線陣列,并且由天線陣列接收信號。在過去的四十年中,學(xué)者們從理論上深入研究了這個問題。提出了一些基于高分辨率子空間的到達(dá)方向(DOA)估計算法。然而,這些基于子空間的算法涉及完整協(xié)方差矩陣的計算,以及協(xié)方差矩陣的特征值分解(EVD),特別在大規(guī)模陣列情形下,計算復(fù)雜度較高。因此,本文研究了 Nystrom近似在DOA估計中的應(yīng)用,并提出了一種有效可靠的DOA估計方法。使用MATLAB軟件進(jìn)行仿真以評估不同方法的性能,如多信號分類(MUSIC),ROOT-MUSIC,通過旋轉(zhuǎn)不變特性(ESPRIT)估計信號參數(shù),基于Nystrom ESPRIT方法,以及基于Nystrom的ROOT-MUSIC方法。仿真結(jié)果表明,與ESPRIT方法相比,ROOT-MUSIC方法提供了更好的DOA估計性能;贜ystrom的ESPRIT方法比傳統(tǒng)的ESPRIT方法更高效,復(fù)雜度更低。本文所提出的基于Nyst...
【文章來源】:北京交通大學(xué)北京市 211工程院校 教育部直屬院校
【文章頁數(shù)】:57 頁
【學(xué)位級別】:碩士
【文章目錄】:
Acknowledgement
摘要
ABSTRACT
LIST OF ABREVIATIONS
1 INTRODUCTION
1.1 Background to the study of DOA
1.2 The Performance of array antennas construction
1.3 The structure of spatial spectrum estimation system
1.4 Direction of arrival estimation methods
1.5 Common methods for DOA Estimation
1.5.1 Conventional beam forming method
1.5.2 Capon minmum variance method
1.5.3 Eigen-space algorithm
1.6 Elements affect DOA estimation results
1.7 Research objectives and methodology
1.8 Overview of chapters
2 DOA ESTIMATION APPROACHES
2.1 Signal model of uniform linear array
2.2 MUSIC algorithm
2.3 Root-MUSIC algorithm
2.4 ESPPIT algorithm
2.5 Simulation
3 ESPRIT ALGORITHM BASED ON NYSTROM METHOD
3.1 Signal sub-space estimation
3.2 DOA estimation
3.3 Computational complexity
3.4 Simulation
4 ROOT-USIC APPROACH BASED ON NYSTROM METHOD
4.1 Noise subspace estimation
4.2 Proof of Nystrom method
4.3 Nystrom-based ROOT-MUSIC approach
4.4 Computational complexity
4.5 Simulations Results
5 CONCLUSIO AND RECOMMENDATIONS
5.1 Conclusion
5.2 Recmmendations
REFERENCES
Dataset for the Master's Thesis
【參考文獻(xiàn)】:
期刊論文
[1]基于多波束系統(tǒng)的波束域方位估計方法研究[J]. 侯穎妮,黃建國,馮西安. 彈箭與制導(dǎo)學(xué)報. 2007(03)
本文編號:3126110
【文章來源】:北京交通大學(xué)北京市 211工程院校 教育部直屬院校
【文章頁數(shù)】:57 頁
【學(xué)位級別】:碩士
【文章目錄】:
Acknowledgement
摘要
ABSTRACT
LIST OF ABREVIATIONS
1 INTRODUCTION
1.1 Background to the study of DOA
1.2 The Performance of array antennas construction
1.3 The structure of spatial spectrum estimation system
1.4 Direction of arrival estimation methods
1.5 Common methods for DOA Estimation
1.5.1 Conventional beam forming method
1.5.2 Capon minmum variance method
1.5.3 Eigen-space algorithm
1.6 Elements affect DOA estimation results
1.7 Research objectives and methodology
1.8 Overview of chapters
2 DOA ESTIMATION APPROACHES
2.1 Signal model of uniform linear array
2.2 MUSIC algorithm
2.3 Root-MUSIC algorithm
2.4 ESPPIT algorithm
2.5 Simulation
3 ESPRIT ALGORITHM BASED ON NYSTROM METHOD
3.1 Signal sub-space estimation
3.2 DOA estimation
3.3 Computational complexity
3.4 Simulation
4 ROOT-USIC APPROACH BASED ON NYSTROM METHOD
4.1 Noise subspace estimation
4.2 Proof of Nystrom method
4.3 Nystrom-based ROOT-MUSIC approach
4.4 Computational complexity
4.5 Simulations Results
5 CONCLUSIO AND RECOMMENDATIONS
5.1 Conclusion
5.2 Recmmendations
REFERENCES
Dataset for the Master's Thesis
【參考文獻(xiàn)】:
期刊論文
[1]基于多波束系統(tǒng)的波束域方位估計方法研究[J]. 侯穎妮,黃建國,馮西安. 彈箭與制導(dǎo)學(xué)報. 2007(03)
本文編號:3126110
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