Using of array of 8 ultrasonic transducers On accoustic tomography for image reconstruction

摘要

Tomography is a method that can reconstruct the internal image of a non-invasively object, based on the measurements. On acoustic tomography, measured data is obtained from the output of ultrasonic transducer that is passed to the object. Velocity of waves that pass through the object is processed to obtain the impulse response and sampling projection. Once processed by the FFT, both these quantities is filtered by the back projection filter to obtain image reconstruction. This method that conducted to the air, water, mud, aluminum, and the combination of those materials, will showed gradations of color in the image in the form of a mesh, contour, pcolor, and surface. This shows the velocity difference when the ultrasonic wave reflected or transmitted by the material of measured object that can be indicated as the difference in the substance of the material in the measured object.