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

  • Yuning Peng*
  • , Qing Shen
  • , Wei Liu
  • , Yizhe Wang
  • *Corresponding author for this work
  • Beijing Institute of Technology
  • Hong Kong Polytechnic University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-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 languageEnglish
Title of host publicationISCAS 2026 - 2026 IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages887-891
Number of pages5
ISBN (Electronic)9798331577698
DOIs
Publication statusPublished - 2026
Externally publishedYes
Event2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026 - Shanghai, China
Duration: 24 May 202627 May 2026

Publication series

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

Conference

Conference2026 IEEE International Symposium on Circuits and Systems, ISCAS 2026
Country/TerritoryChina
CityShanghai
Period24/05/2627/05/26

Keywords

  • Distributed linear array networks
  • group sparsity
  • localization
  • off-grid
  • wideband

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