System and method for the calibration of a hydrophone line array in a water-filled tank
US12422587B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Feb 21, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/307
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided to measure the complex sensitivity of hydrophone data channels across a range of frequencies by using a water-filled tank with proximate boundaries. A hydrophone array and reference hydrophone are helically affixed to a test fixture resting on a rotation platform. When the test fixture is submerged in the tank; the platform rotates about a contour of the platform in intervals for a predetermined time interval before indexing to the next angle. Signals transmitted by an acoustic projector in the tank are received on the hydrophones of the line array and the calibrated reference hydrophone. Electrical signals from the reference hydrophone are transmitted over an electrical cable and received by the acoustic data processor for use in calibrating the hydrophone line array. Electrical signals from the hydrophones of the hydrophone line array are also transmitted to the data processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.