Range Difference-Based Target Localization Under Stratification Effect and NLOS Bias in UWSNs

Xiaojun Mei, Dezhi Han, Nasir Saeed, Huafeng Wu, Teng Ma, Jiangfeng Xian

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

This letter proposes a robust target localization technique for acoustic underwater wireless sensor networks (UWSNs) that simultaneously experience the stratification effect and the non-line-of-sight (NLOS) bias. Specifically, we develop the range difference (RD)-based majorization minimization expression and its theoretical analysis, which leads to a surrogate function coupling with an iterative form. To figure out the initial estimate of the iteration, the proposed method converts the original localization problem into an RD-based generalized trust-region subproblem (RD-GTRS) after selecting a reference node. Eventually, an RD-based target localization approach (RD-TLA) is presented to iteratively estimate the final location. Simulation results show that the proposed RD-TLA method achieves better localization accuracy compared with other state-of-the-art methods in different scenarios.

Original languageEnglish
Pages (from-to)2080-2084
Number of pages5
JournalIEEE Wireless Communications Letters
Volume11
Issue number10
DOIs
Publication statusPublished - Oct 1 2022
Externally publishedYes

Keywords

  • non-line-of-sight (NLOS)
  • range difference
  • Target localization
  • underwater wireless sensor networks (UWSNs)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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