Next Article in Journal
Display in the Wild (DIW): An Adaptive Projection-Imaging System to Screen Geometry in Real Time
Previous Article in Journal
Semi-Supervised Segmentation Framework Based on Spot-Divergence Supervoxelization of Multi-Sensor Fusion Data for Autonomous Forest Machine Applications
Previous Article in Special Issue
A Broadband Beamformer Suitable for UUV to Detect the Tones Radiated from Marine Vessels
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(9), 3062; https://doi.org/10.3390/s18093062

Robust Directional Angle Estimation of Underwater Acoustic Sources Using a Marine Vehicle

Korea Research Institute of Ships and Ocean engineering, Daejeon 34103, Korea
*
Author to whom correspondence should be addressed.
Received: 23 July 2018 / Revised: 6 September 2018 / Accepted: 11 September 2018 / Published: 12 September 2018
(This article belongs to the Special Issue Underwater Sensing, Communication, Networking and Systems)
Full-Text   |   PDF [1305 KB, uploaded 12 September 2018]   |  

Abstract

Acoustic source localization is used in many underwater applications. Acquiring an accurate directional angle for an acoustic source is crucial for source localization. To achieve this purpose, this paper presents a method for directional angle estimation of underwater acoustic sources using a marine vehicle. It is assumed that the vehicle is equipped with two hydrophones and that the acoustic source transmits a specific signal repeatedly. The proposed method provides a probabilistic model for time delay estimation. The probability is recursively updated by prediction and update steps. The prediction step performs a probability transition using the angular displacement of the marine vehicle. The predicted probability is updated using a generalized cross correlation function with a verification process using entropy measurement. The proposed method can provide a reliable and accurate estimation of the directional angles of underwater acoustic sources. Experimental results demonstrate good performance of the proposed probabilistic directional angle estimation method in both an inland water environment and a harbor environment. View Full-Text
Keywords: angle of arrival; direction of arrival; time difference of arrival; acoustic source localization; marine vehicle angle of arrival; direction of arrival; time difference of arrival; acoustic source localization; marine vehicle
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Choi, J.; Park, J.; Lee, Y.; Jung, J.; Choi, H.-T. Robust Directional Angle Estimation of Underwater Acoustic Sources Using a Marine Vehicle. Sensors 2018, 18, 3062.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top