Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks

Yuning Peng; Qing Shen; Wei Liu; Yizhe Wang

doi:10.1109/ISCAS66217.2026.11563042

Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks

Yuning Peng
, Qing Shen
, Wei Liu
, Yizhe Wang

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

The problem of three-dimensional (3-D) off-grid source localization based on a distributed linear array network is investigated. For wideband signals, a focusing-based off-grid localization method exploiting the group sparsity concept is proposed, where the on-grid information and the 3-D grid offsets are estimated separately. Furthermore, a dynamic-dictionary-based re-focused localization method is presented to iteratively mitigate system mismatch errors caused by both focusing and off-grid Taylor approximation. Employing a coarse grid, both methods demonstrate improved performance while maintaining low computational complexity.

Original language	English
Title of host publication	ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	887-891
Number of pages	5
ISBN (Electronic)	9798331577698
DOIs	https://doi.org/10.1109/ISCAS66217.2026.11563042
Publication status	Published - May 2026
Event	2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026 - Shanghai, China Duration: 24 May 2026 → 27 May 2026

Publication series

Name	Proceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)	0271-4310

Conference

Conference	2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026
Country/Territory	China
City	Shanghai
Period	24/05/26 → 27/05/26

Keywords

Distributed linear array networks
group sparsity
localization
off-grid
wideband

ASJC Scopus subject areas

Electrical and Electronic Engineering

More information

10.1109/ISCAS66217.2026.11563042

Cite this

Peng, Y., Shen, Q., Liu, W., & Wang, Y. (2026). Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks. In ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems (pp. 887-891). (Proceedings - IEEE International Symposium on Circuits and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS66217.2026.11563042

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title = "Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks",

abstract = "The problem of three-dimensional (3-D) off-grid source localization based on a distributed linear array network is investigated. For wideband signals, a focusing-based off-grid localization method exploiting the group sparsity concept is proposed, where the on-grid information and the 3-D grid offsets are estimated separately. Furthermore, a dynamic-dictionary-based re-focused localization method is presented to iteratively mitigate system mismatch errors caused by both focusing and off-grid Taylor approximation. Employing a coarse grid, both methods demonstrate improved performance while maintaining low computational complexity.",

keywords = "Distributed linear array networks, group sparsity, localization, off-grid, wideband",

author = "Yuning Peng and Qing Shen and Wei Liu and Yizhe Wang",

note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026 ; Conference date: 24-05-2026 Through 27-05-2026",

year = "2026",

month = may,

doi = "10.1109/ISCAS66217.2026.11563042",

language = "English",

series = "Proceedings - IEEE International Symposium on Circuits and Systems",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Peng, Y, Shen, Q, Liu, W & Wang, Y 2026, Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks. in ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems. Proceedings - IEEE International Symposium on Circuits and Systems, Institute of Electrical and Electronics Engineers Inc., pp. 887-891, 2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026, Shanghai, China, 24/05/26. https://doi.org/10.1109/ISCAS66217.2026.11563042

Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks. / Peng, Yuning; Shen, Qing; Liu, Wei et al.
ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems. Institute of Electrical and Electronics Engineers Inc., 2026. p. 887-891 (Proceedings - IEEE International Symposium on Circuits and Systems).

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AU - Shen, Qing

AU - Liu, Wei

AU - Wang, Yizhe

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N2 - The problem of three-dimensional (3-D) off-grid source localization based on a distributed linear array network is investigated. For wideband signals, a focusing-based off-grid localization method exploiting the group sparsity concept is proposed, where the on-grid information and the 3-D grid offsets are estimated separately. Furthermore, a dynamic-dictionary-based re-focused localization method is presented to iteratively mitigate system mismatch errors caused by both focusing and off-grid Taylor approximation. Employing a coarse grid, both methods demonstrate improved performance while maintaining low computational complexity.

AB - The problem of three-dimensional (3-D) off-grid source localization based on a distributed linear array network is investigated. For wideband signals, a focusing-based off-grid localization method exploiting the group sparsity concept is proposed, where the on-grid information and the 3-D grid offsets are estimated separately. Furthermore, a dynamic-dictionary-based re-focused localization method is presented to iteratively mitigate system mismatch errors caused by both focusing and off-grid Taylor approximation. Employing a coarse grid, both methods demonstrate improved performance while maintaining low computational complexity.

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KW - group sparsity

KW - localization

KW - off-grid

KW - wideband

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DO - 10.1109/ISCAS66217.2026.11563042

M3 - Conference article published in proceeding or book

AN - SCOPUS:105043478689

T3 - Proceedings - IEEE International Symposium on Circuits and Systems

SP - 887

EP - 891

BT - ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026

Y2 - 24 May 2026 through 27 May 2026

ER -

Peng Y, Shen Q, Liu W, Wang Y. Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks. In ISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems. Institute of Electrical and Electronics Engineers Inc. 2026. p. 887-891. (Proceedings - IEEE International Symposium on Circuits and Systems). doi: 10.1109/ISCAS66217.2026.11563042

Three-Dimensional Off-Grid Source Localization Based on Distributed Linear Array Networks

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