Multifrequency Holography Using Backpropagation

The technique of wavefield backpropagation has been used quite extensively in the literature. We report on an analytical study of the resolution properties of this technique. Backpropagation as a form of holographic reconstruction suffers from poor axial resolution. We derive expressions for both th...

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Bibliographic Details
Published inUltrasonic imaging Vol. 8; no. 3; pp. 213 - 224
Main Authors Teo, Tat-Jin, Reid, John M.
Format Journal Article
LanguageEnglish
Published Los Angeles, CA SAGE Publications 01.07.1986
Subjects
Backpropagation
broadband techniques
Angular spectrum decomposition
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Summary:The technique of wavefield backpropagation has been used quite extensively in the literature. We report on an analytical study of the resolution properties of this technique. Backpropagation as a form of holographic reconstruction suffers from poor axial resolution. We derive expressions for both the axial and the lateral resolutions. We also show that the axial resolution can be substantially improved by the use of multiple frequencies. We derive an expression relating the resolution and bandwidth.
ISSN:0161-7346
1096-0910
DOI:10.1177/016173468600800305