DISCONTINUOUS COHERENT WAVE ACOUSTIC HOLOGRAPHY

The response to deep reflecting layers in an acoustic hologram is improved by varying the time at which acoustic wave relating to to various images are radiated either by pulsing the source of coherent waves or turning the source off after a steady state has been established and gating the receivers...

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Bibliographic Details
Main Author NOYES D. SMITH JR
Format Patent
LanguageEnglish
Published 27.06.1972
Subjects
CINEMATOGRAPHY
DETECTING MASSES OR OBJECTS
ELECTROGRAPHY
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
HOLOGRAPHIC PROCESSES OR APPARATUS
HOLOGRAPHY
MEASURING
PHOTOGRAPHY
PHYSICS
TESTING
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Summary:The response to deep reflecting layers in an acoustic hologram is improved by varying the time at which acoustic wave relating to to various images are radiated either by pulsing the source of coherent waves or turning the source off after a steady state has been established and gating the receivers so that acoustic waves relating to very strong and very weak images are not being received at the same time.
Bibliography:Application Number: USD3673557