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US 11,728,906 B1Granted
Constant beam width acoustic transducer design method
OwnerDehua Huanginventor
Life of this patent
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Abstract
A method for providing a broadband constant beam width acoustic array includes providing a transducer array in an axisymmetric configuration. A beam width is specified, and an integer order Legendre polynomial is determined for that beam width. A control parameter is determined that will increase the integer order Legendre polynomial to that beam width. The Legendre polynomial is used to provide a shading function for the array of transducers that will give the specified beam width.
Claims6
A method for providing a broadband constant beam width acoustic array:
- providing an array of transducers in a known three dimensional axisymmetric configuration with each transducer having an associated signal;
- receiving a user specified beam width;
- determining a Legendre polynomial integer order utilizing a Legendre polynomial having a beam width less than the user specified beam width;
- calculating a control parameter for application to a Legendre polynomial having the determined Legendre polynomial integer order that will give the user specified beam width;
- utilizing the Legendre polynomial having the determined Legendre polynomial integer order with the calculated control parameter to give a shading function for the associated signals of the array of transducers;
- and
- utilizing the shading function with the array of transducers for transmission, reception, or both transmission and reception of signals.
4 more elements
Dependencies are inferred from the claim text.