METHOD FOR CALIBRATING AN ACOUSTIC ANTENNA

A method for calibrating an acoustic antenna including elementary transducers distributed over an antenna row or plane, about a reference transducer, the antenna defining a main axis, passing through the reference transducer, and perpendicular to the antenna row or plane, the method including: measu...

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Bibliographic Details
Main Authors Nguyen, Van-Tri, Perrier, Regis
Format Patent
LanguageEnglish
Published 14.01.2021
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Summary:A method for calibrating an acoustic antenna including elementary transducers distributed over an antenna row or plane, about a reference transducer, the antenna defining a main axis, passing through the reference transducer, and perpendicular to the antenna row or plane, the method including: measuring signals generated by elementary transducers in response to a calibration acoustic wave from a calibration source; on the basis of these measurements, determining a temporal phase shift of the signal respectively generated by each elementary transducer; reiterating the above steps in such a way that, in at least one iteration, the position of the calibration source may be considered to be centered on the main axis; and estimating a phase shift of each elementary transducer with respect to the reference transducer.
Bibliography:Application Number: US202016922388