Home // SENSORDEVICES 2014, The Fifth International Conference on Sensor Device Technologies and Applications // View article
Authors:
Mario Wolf
Elfgard Kühnicke
Keywords: Ultrasound: measurement of sound velocity; locally resolved; annular arrays; high frequency approximation; integral transform method
Abstract:
A new method to measure sound velocity and distance simultaneously and locally resolved is applied in media with continuously changing properties. Instead of using reflectors at known positions the echoes of moving scattering particles are analysed to determine the focus position of an annular array. Systematic deviation between measurements and sound field simulations show that sound propagation has to be described with a modified wave equation. A new approach determining Green’s functions for a half space with continuously changing properties is presented. It combines the high frequency approximation with an integral transform method.
Pages: 19 to 22
Copyright: Copyright (c) IARIA, 2014
Publication date: November 16, 2014
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-61208-375-9
Location: Lisbon, Portugal
Dates: from November 16, 2014 to November 20, 2014