Beamformer
US4170766A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1978 |
| Grant date | Oct 9, 1979 |
| Priority date | — |
| Expiry date | Jan 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/905
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A beamformer forms a beam from a set of samples of signals from an array of elements such as sonar transducers. Sequences of signal samples from each transducer are delayed relative to each other by fractional amounts of the intersample interval. The sequences of the signal samples with the predetermined delays therebetween are applied to a common beamforming filter having a pass band of sufficient width to accommodate the signals. The impulse response time of the filter is longer than the intersample interval in any one of the sample sequences for providing a beam equal to the sum of regenerated transducer signals. The radiation pattern of the beam is independent of the sampling rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.