Ultrasonic long range underwater acoustic sensing: going beyond the standard pulse repetition rate

Nadav Arbel; Moshe Tur; Avishay Eyal

doi:10.1117/12.2678079

23 May 2023 Ultrasonic long range underwater acoustic sensing: going beyond the standard pulse repetition rate

Nadav Arbel, Moshe Tur, Avishay Eyal

Author Affiliations +

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126431S (2023) https://doi.org/10.1117/12.2678079
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

Measuring acoustic waves propagation in solid or fluid media is an important task in applications such as Structural Health Monitoring (SHM), seismology, oceanography, underwater acoustic communications and more. While there are quite a few acoustic sensors that are considered to be highly sensitive and broadband, such as geophones for seismic applications or hydrophones for underwater applications, they are all point sensors. Point sensors are limited since they cannot provide spatiotemporal measurement of propagating acoustic waves. In addition, their coverage volume is limited due to the attenuation of the acoustic waves in the medium. These limitations can be alleviated by using an array of acoustic sensors which can provide the required spatiotemporal measurement capability in addition to extended detection volume. This work describes the implementation of an underwater fiber-optic sensor array for ultrasonic (US) waves. To overcome the well-known trade-off between update rate and sensing fiber length a Coded Array Matched Interrogation (C-AMI) method was implemented. The method enabled an enhancement of the theoretical sampling rate by a factor of 54. The system successfully measured the propagation of an ultrasonic pulse with a carrier of 95kHz along a 20m long test pool.

Citation Download Citation

Nadav Arbel, Moshe Tur, and Avishay Eyal "Ultrasonic long range underwater acoustic sensing: going beyond the standard pulse repetition rate", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126431S (23 May 2023); https://doi.org/10.1117/12.2678079

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Acoustics

Fiber Bragg gratings

Ultrasonics

Reflectors

Acoustic waves

Sensors

Wave propagation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years