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A Stratified Linear Sound Speed Profile Simplification Method for Localization Correction

Authors:

Wei Huang,

Mingliu Liu,

Deshi Li,

Yi Cen,

Shuaijun WangAuthors Info & Claims

WUWNet '19: Proceedings of the 14th International Conference on Underwater Networks & Systems

Article No.: 30, Pages 1 - 6

https://doi.org/10.1145/3366486.3366517

Published: 13 February 2020 Publication History

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Abstract

Localization is important for underwater sensor networks as the validity of data and the maintenance of nodes both need location information. Because of the Snell effect caused by non-uniform distribution of sound speed, the signal propagation path is curved, which would lead to errors when traditional linear propagation localization models are used. Sound speed profiles (SSPs) can be used to correct the signal trajectory error according to the ray theory, so as to improve the localization accuracy. To simplify the expression of original SSPs and reduce the computational complexity of ray tracing while guaranteeing the accuracy, we propose a stratified linear SSP simplification method with a distance-minimization-based equal-interval control points searching (DM-EICPS) algorithm. Simulation results show that, compared with other curve approximation algorithms, the DM-EICPS algorithm not only generates simplified SSPs rapidly, but also achieves good SSP approximation accuracy. Moreover, the corrected localization accuracy with simplified SSPs is an order of magnitude higher than the linear propagation model, and the time overhead of ray tracing with simplified SSPs is obviously reduced compared to original SSPs.

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Huang WMeng KSun WShu JXu TZhang H(2024)Fast Ray-Tracing-Based Precise Localization for Internet of Underwater Things without Prior Acknowledgment of Target DepthJournal of Marine Science and Engineering10.3390/jmse1204056212:4(562)Online publication date: 27-Mar-2024
https://doi.org/10.3390/jmse12040562

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WUWNet '19: Proceedings of the 14th International Conference on Underwater Networks & Systems

October 2019

210 pages

ISBN:9781450377409

DOI:10.1145/3366486

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike International 4.0 License.

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Association for Computing Machinery

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Published: 13 February 2020

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WUWNET'19

WUWNET'19: International Conference on Underwater Networks & Systems

October 23 - 25, 2019

GA, Atlanta, USA

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Huang WMeng KSun WShu JXu TZhang H(2024)Fast Ray-Tracing-Based Precise Localization for Internet of Underwater Things without Prior Acknowledgment of Target DepthJournal of Marine Science and Engineering10.3390/jmse1204056212:4(562)Online publication date: 27-Mar-2024
https://doi.org/10.3390/jmse12040562

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Underwater sound speed inversion by joint artificial neural network and ray theory

Target Localization and Tracking for an Isogradient Sound Speed Profile

Underwater localization with sound velocity profile

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