Fully Automatic Computation of Diagonal Loading Levels for Robust Adaptive Beamforming

被引：229

作者：

Du, Lin ^{[1
]}

Li, Jian ^{[1
]}

Stoica, Petre ^{[2
]}

机构：

[1] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA

[2] Uppsala Univ, Dept Informat Technol, Uppsala, Sweden

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2010年 / 46卷 / 01期

基金：

美国国家科学基金会; 欧洲研究理事会; 瑞典研究理事会;

关键词：

RIDGE-REGRESSION; OPTIMIZATION; KNOWLEDGE;

D O I：

10.1109/TAES.2010.5417174

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The main drawback of the conventional diagonal loading (DL) approaches is that there is no clear guideline on how to choose the DL level reliably or how to select user parameters appropriately. An algorithm that can be used to compute the DL level completely automatically from the given data without the need of specifying any user parameter is considered. In this algorithm an enhanced covariance matrix estimate obtained via a shrinkage method, instead of the sample covariance matrix, is used in the standard Capon beamforming formulation. The performance of the resulting beamformer is illustrated via numerical examples, and it is compared with several other adaptive beamformers.

引用

页码：449 / 458

页数：11

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