Synthetic Augmented L-shaped Array design and 2D Cramér-Rao bound analysis based on Vertical-Horizontal Moving Scheme ☆

被引：1

作者：

Feng, Danni ^{[1
,4
]}

Wang, Guiyu ^{[1
,3
]}

Li, Xiangnan ^{[2
]}

Wang, Weijiang ^{[1
,3
]}

Ren, Shiwei ^{[1
,3
]}

机构：

[1] Beijing Inst Technol, Sch Integrated Circuits & Elect, 5 South Zhongguancun St, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Sch Informat & Elect, 5 South Zhongguancun St, Beijing 100081, Peoples R China

[3] BIT Chongqing Inst Microelect & Microsyst, Chongqing 401332, Peoples R China

[4] Beijing Inst Technol, Yangtze Delta Reg Acad, Jiaxing 314000, Peoples R China

来源：

DIGITAL SIGNAL PROCESSING | 2025年 / 156卷

基金：

中国国家自然科学基金;

关键词：

DOA estimation; Moving scheme; Synthetic aperture; Cram & eacute; r-Rao bound; NESTED ARRAYS; ENHANCED DEGREES; DOA ESTIMATION; DIMENSIONS;

D O I：

10.1016/j.dsp.2024.104867

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper introduces an innovative approach to enhance the effectiveness of the L-shaped array using synthetic aperture processing. Through the implementation of the Vertical-Horizontal Moving Scheme (VHMS), a novel 2D array structure called the Synthetic Augmented L-shaped Array (SALA) is developed, featuring varied element spacing along the x and y axes of a 1D linear array. Comparative analyses demonstrate that the SALA achieves a larger difference coarray and higher degrees of freedom compared to arrays with an equivalent number of physical elements. The paper also provides a comprehensive derivation of the Cram & eacute;r-Rao Bound (CRB) for 2D moving arrays, with detailed analyses of its conditions and properties. Simulation results highlight the SALA's superior capabilities in detecting multiple sources and providing precise 2D direction of arrival estimation, along with a lower CRB, indicating its potential for practical implementation in diverse scenarios

引用

页数：12