Acoustic vector sensing sonar system
US5930201A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jan 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/8083
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for the detection of acoustic signals utilizing an array of acoustic sensors coupled to a beamformer which generates a steered acoustic beam using the output from one or more of the acoustic sensors within the array. The acoustic sensors include a multiaxis vector sensor co-located with a scalar acoustic pressure sensor. The beamformer generates a weighted output for each acoustic sensor by combining the weighted output of the scalar pressure sensor with the scalar field generated by forming the inner product of the vector components measured at each sensor location with a vector component weighting vector. The weighted output signals are delayed to synchronize the phase of the weighted output signal to that of a weighted signal at a reference array location. The resulting delayed weighted output signals are then summed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.