Abstract
In this paper a frequency domain implementation of the Virtual Source Aperture (VSA) ultrasonic array imaging technique is presented. Multiple elements are fired with a phased array like delay law in order to generate a beamform as if it had originated from a virtual source located behind the aperture. Each element individually receives. The time domain Total Focusing Method (TFM) and the frequency domain phase migration methods are used to image a series of reflectors and the performance of the two imaging algorithms are measured by mapping the response of a generic reflector over a range of positions and comparing the indication intensity of the two algorithms.
How to Cite:
Hoyle, E. ., Charlton, P. ., Rees, J. ., Hoyle, E. . & Sutcliffe, M. ., (2019) “An ultrasonic frequency domain imaging algorithm using virtual sources”, Review of Progress in Quantitative Nondestructive Evaluation .
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