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Phase Shift Migration for Imaging Layered Objects and Objects Immersed in Water
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
2010 (English)In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, ISSN 0885-3010, E-ISSN 1525-8955, Vol. 57, no 11, 2522-2530 p.Article in journal (Refereed) Published
Abstract [en]

This paper proposes the use of phase shift migration for ultrasonic imaging of layered objects and objects immersed in water. The method, which was developed in reflection seismology, is a frequency domain technique that in a computationally efficient way restores images of objects that are isotropic and homogeneous in the lateral direction but inhomogeneous in depth. The performance of the proposed method was evaluated using immersion test data from a block with side-drilled holes with an additional scatterer residing in water. In this way, the method's capability of simultaneously imaging scatterers in different media and at different depths was investigated. The method was also applied to a copper block with flat bottom holes. The results verify that the proposed method is capable of producing high-resolution and low-noise images for layered or immersed objects.

Place, publisher, year, edition, pages
2010. Vol. 57, no 11, 2522-2530 p.
National Category
Signal Processing
Research subject
Electrical Engineering with specialization in Signal Processing
Identifiers
URN: urn:nbn:se:uu:diva-135353DOI: 10.1109/TUFFC.2010.1718ISI: 000283944900015OAI: oai:DiVA.org:uu-135353DiVA: diva2:375287
Available from: 2010-12-07 Created: 2010-12-06 Last updated: 2017-12-11Bibliographically approved

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Olofsson, Tomas

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