Method for calibrating an acoustic antenna
US11460564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Aug 30, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.