NEW TECHNIQUE FOR CLUTTER REDUCTION IN ULTRASONIC IMAGING.

A new technique for clutter suppression using the split-spectrum principle is developed. From a set of random variables that correspond to each range delay of the different frequency windows obtained by splitting the spectrum of the received echo, an optimum receiver is constructed. A theoretical basis for this technique is introduced and the effectiveness of the technique in clutter reduction is shown experimentally. A theoretical performance evaluation of the algorithm is also presented.