Three methods of interpretation of outputs from sparsely sampled two-dimensional array of receiving ultrasonic transducers used in transmission experiments investigated. Methods are: description of sampled beam in terms of first few spatial moments of sampled distribution of energy; use of signal-dependent cutoff to limit extent of effective receiver aperture; and use of spatial interpolation to increase apparent density of sampling during computation. Methods reduce errors in computations of shapes of ultrasonic beams.


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    Title :

    Sparsely Sampled Phase-Insensitive Ultrasonic Transducer Arrays


    Contributors:

    Published in:

    Publication date :

    1992-11-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English






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