Two-dimensional separation of wideband raypaths in underwater acoustics

Fengyan Zhong (), Zhicheng Li and Chao Yang
Additional contact information
Fengyan Zhong: Southeast University
Zhicheng Li: Southeast University
Chao Yang: Southeast University

Telecommunication Systems: Modelling, Analysis, Design and Management, 2025, vol. 88, issue 2, No 34, 11 pages

Abstract: Abstract Ocean acoustic tomography (OAT) is frequently used for the estimation of sound speed variations in the shallow ocean waveguide. As the first step of OAT, acoustic wideband rays along the different paths are exactly separated by two particular parameters of direction of arrival (DOA) and time of arrival (TOA). However, the multipath propagation of ray paths induces interferences between different rays, which makes it impossible to identify these raypaths. In this paper, a two-dimensional wideband grid-free algorithm is proposed for separating acoustic raypaths by using their DOAs and TOAs. Firstly, a continuous formulation of the raypath separation problem is presented. Then, an atomic norm minimization (ANM) problem is designed by exploiting an atomic norm that promotes signal sparsity in the continuous domain. An equivalent maximization problem is introduced to solve such an ANM problem, which can be solved efficiently with semidefinite programming. Finally, certain parameters of DOA and TOA are achieved through an optimization variable of the maximization problem. The experimental results show that the proposed method obtains more accurate separation performance compared to conventional compressive sensing-based algorithms.

Keywords: Ocean acoustic tomography; Direction-of-arrival (DOA); Time of arrival; Two-dimensional wideband raypath separation; Atomic norm minimization (ANM) (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s11235-025-01300-3 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:telsys:v:88:y:2025:i:2:d:10.1007_s11235-025-01300-3

Ordering information: This journal article can be ordered from
http://www.springer.com/journal/11235

DOI: 10.1007/s11235-025-01300-3

Access Statistics for this article

Telecommunication Systems: Modelling, Analysis, Design and Management is currently edited by Muhammad Khan

More articles in Telecommunication Systems: Modelling, Analysis, Design and Management from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().