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Three-dimensional imaging using a frequency-domain synthetic aperture focusing technique

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1 Author(s)
L. J. Busse ; TETRAD Corp., Englewood, CO, USA

A frequency-domain method for implementing the synthetic aperture focusing technique is developed and demonstrated using computer simulation. As presented, the method is well suited to reconstructing ultrasonic reflectivity over a volumetric region of space using measurements made over an adjacent two-dimensional aperture. Extensive use is made of both one- and two-dimensional Fourier transformations to perform the temporal and spatial correlation required by the technique, making the method well suited to general-purpose computing hardware. Results are presented demonstrating both the lateral and axial resolution achieved by the method. The effect of limiting the reconstruction bandwidth is also demonstrated.<>

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IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:39 ,  Issue: 2 )