Abstract
Fundamental construction and some experimental results of incoherent ultrasonic imaging systems are presented. A means for the generation of incoherent ultrasonic fields, a proper scanning method of receivers for the detection of coherence functions, and methods of signal processing for the reconstruction of images from the detected coherence functions are proposed and their properties are discussed theoretically. A concrete system based on these discussions is constructed. The experimental results show the usefulness of the proposed system, though the experiments are carried out only for one-dimensional objects. Moreover, as an example for showing the special feature of the system, it is applied to imaging in a turbulent medium. The effectiveness of the method is illustrated by comparing the result with that of a holographic imaging system. Subject Classification: 35.65; 60.30.
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