Next Article in Journal
Advances in the Application of Microcapsules as Carriers of Functional Compounds for Food Products
Next Article in Special Issue
Hearing in Noise: The Importance of Coding Strategies—Normal-Hearing Subjects and Cochlear Implant Users
Previous Article in Journal
3D U-Net for Skull Stripping in Brain MRI
Previous Article in Special Issue
Channel Modelling and Estimation for Shallow Underwater Acoustic OFDM Communication via Simulation Platform
Article Menu
Issue 3 (February-1) cover image

Export Article

Open AccessArticle
Appl. Sci. 2019, 9(3), 570; https://doi.org/10.3390/app9030570

In-Depth Exploration of Signal Self-Cancellation Phenomenon to Achieve DOA Estimation of Underwater Acoustic Sources

1
College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China
2
College of Electronic Science, National University of Defense Technology, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Received: 9 December 2018 / Revised: 24 January 2019 / Accepted: 6 February 2019 / Published: 8 February 2019
(This article belongs to the Special Issue Modelling, Simulation and Data Analysis in Acoustical Problems)
Full-Text   |   PDF [381 KB, uploaded 13 February 2019]   |  

Abstract

In the ocean environment, the minimum variance distortionless response beamformer usually has the problem of signal self-cancellation, that is, the acoustic signal of interest is erroneously suppressed as interference. By exploring the useful information behind the signal self-cancellation phenomenon, a high-precision direction estimation method for underwater acoustic sources is proposed. First, a pseudo spatial power spectrum is obtained by performing unit circle mapping on the beam response in the direction interval. Second, the online calculation process is given for reducing the computational complexity. The computer simulation results show that the proposed algorithm can obtain satisfactory direction estimation accuracy under the conditions of low intensity of acoustic source, strong interference and noise, and less array snapshot data. View Full-Text
Keywords: minimum variance distortionless response; signal self-cancellation; direction estimation; underwater acoustic source; spatial power spectrum minimum variance distortionless response; signal self-cancellation; direction estimation; underwater acoustic source; spatial power spectrum
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

Wang, F.; Chen, Y.; Wan, J. In-Depth Exploration of Signal Self-Cancellation Phenomenon to Achieve DOA Estimation of Underwater Acoustic Sources. Appl. Sci. 2019, 9, 570.

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]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top