Estimation of ECHO Scattered from Strongly Scattering Medium
The estimation of echo signal has been succeeded only for plane and spherical incident waves, but echoes are usually reflected in near field of an ultrasonic transducer in most ultrasonic pulse echo systems. Lately we have proposed the new estimation algorithm for echo signal which is based on a discrete expression of the medium. This algorithm can be applied for any incident waves if the medium can be assumed as weakly scattering one. In this paper it is modified to the case of strongly scattering medium and then echoes reflected from a wire of nylon are calculated. The comparison with experiments shows good agreement.
KeywordsImpulse Response Incident Wave Inverse Fourier Transform Acoustic Impedance Ultrasonic Pulse
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