In Situ Shape Estimation of Triangular Moored Hydrophone Arrays Using Ambient Signals

In this paper, a method is presented for correcting relative errors in the locations of individual sensors in a three-element bottom-moored array, using ambient signal arrivals recorded by the array. It has the benefit that knowledge of absolute source positions is not required to determine the rela...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of oceanic engineering 2017-10, Vol.42 (4), p.923-935
Main Authors: Nichols, Stephen M., Bradley, David L.
Format: Article
Language:English
Subjects:
Acoustic arrays
Angle of arrival
Array shape estimation
Arrivals
Comprehensive Nuclear-Test Ban Treaty Organization (CTBTO)
Estimation
hydroacoustic monitoring
Hydrophones
inversion
Monitoring systems
Nuclear tests
Nuclear weapons
Organizations
Sensor arrays
Sensors
Shape
Sonar equipment
Underwater acoustics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a method is presented for correcting relative errors in the locations of individual sensors in a three-element bottom-moored array, using ambient signal arrivals recorded by the array. It has the benefit that knowledge of absolute source positions is not required to determine the relative shape of the array. The procedure is demonstrated using episodic ambient signal arrivals recorded by the southern array of the Wake Island hydrophone station, which is a component of the Comprehensive Nuclear-Test Ban Treaty Organization's (CTBTO) International Monitoring System (IMS). The original coordinates of sensors 2 and 3 were adjusted by 75 and 115 m, respectively, removing approximately 4° of error in estimating the arrival angles of signals. The estimated coordinates compared favorably with the results of a position revision by the CTBTO a year after the triad installation.
ISSN:0364-9059
1558-1691
DOI:10.1109/JOE.2016.2625378