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An analysis of the accuracy level in different alternative techniques for the estimation of increasing temporal displacements in ultrasonic echoes acquired from phantoms (physical and computationally simulated) that mimic biological tissues, is carried out. These time displacements of echoes can be produced, for instance, by a controlled induction of a uniform temperature rising. Average displacement...
This paper presents a noise immunity analysis of time delay estimation (TDE) techniques used on ultrasonic echoes for non invasive temperature estimation. Four methods are analyzed. The methodology consists on corrupting a simulated ultrasonic signal (ideal signal) with white noise and a signal-to-noise ratio of 3 dB and 6 dB. After this, noise immunity analysis is performed for every method. The...
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