Synthetic antenna sonar and method for forming synthetic antenna beams
US11112499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Mar 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/52004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A synthetic aperture sonar moving along a first axis comprises an emitting device configured to emit, in each ping, at least one acoustic pulse toward an observed zone in a set of sectors comprising at least one sector. The sonar comprises a first physical receiving antenna extending along the first axis allowing measurements of backscattered signals to be acquired and a processing device configured to form, over R pings, for each sector, synthetic aperture beams from measurements of signals backscattered by the observed zone and generated by acoustic pulses emitted in the sector. The sonar comprises at least one gyrometer. The processing device is configured to correct for variations in the movement of the first receiving antenna during the formation of the synthetic aperture beams of the set of sectors by carrying out an autocalibration by intercorrelation of the successive pings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.