.png){kind=icon}
返回
A Block Alternating Optimization Method for Direction-of-Arrival Estimation With Nested Array
.png){kind=icon}
OA
AI
DOI：10.1109/ACCESS.2019.2921967.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
In this paper, direction-of-arrival estimation using nested array is studied in the framework of sparse signal representation. With the vectorization operator, a new real-valued non-negative sparse signal recovery model, which has a wider virtual array aperture, is built. To leverage celebrated compressive sensing algorithms, the continuous parameter space has to be discretized to a number of fixed grid points, which inevitably incurs modeling error caused by off-grid gap. To remedy this issue, a block alternating optimization method is put forth that jointly estimates the sparse signal and refines the locations of grid points. Specifically, inspired by the majorization minimization, the proposed method iteratively minimizes a surrogate function majorizing the given objective function, where only a single block of variables are updated per iteration while the remaining ones are kept fixed. The proposed method features affordable computational complexity, and numerical tests corroborate its superior performance relative to existing alternatives in both overdetermined and underdetermined scenarios.
Keyword:
Direction-of-arrival (DOA) estimation
sparse signal representation
alternating optimization
majorization minimization
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.6
论文数:
9.8W
被引数:
29.4W
机构
引用论文
Efficient direction of arrival estimation based on sparse covariance fitting criterion with modeling mismatch.png)
SIGNAL PROCESSINGOAAI
SIGNAL PROCESSINGIF3.6
OAAI分享收藏Underdetermined DOA Estimation Under the Compressive Sensing Framework: A Review压缩感知框架下的欠定DOA估计: 综述IEEE ACCESS
OAAI
IEEE ACCESSIF3.6
OAAI分享收藏分享收藏Off-grid DOA estimation with nonconvex regularization via joint sparse representationSIGNAL PROCESSING
SIGNAL PROCESSINGIF3.6
PREAI
分享收藏THE UNIFYING ROLE OF THE COARRAY IN APERTURE SYNTHESIS FOR COHERENT AND INCOHERENT IMAGINGPROCEEDINGS OF THE IEEE
PROCEEDINGS OF THE IEEEIF25.9
PREAI
分享收藏Internal brain state regulates membrane potential synchrony in barrel cortex of behaving miceNature
NatureIF0
PREAI
分享收藏
查看更多内容