Performance of a time of flight (ToF) laser range finding system using acoustic-based direction of arrival (DoA)
US11639995B2 · kind B2 · utility
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Key dates
| Filing date | Aug 9, 2017 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | Oct 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2015/465
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An acoustic-based Direction of Arrival (DoA) system uses acoustic information to determine the direction of incoming sound, such as a person talking. The direction of the sound is then used to focus a laser-based time of flight (ToF) system to narrow the area of laser illumination, improving the signal to noise ratio because laser illumination is focused on the direction of the sound. The DoA system also provides elevation information pertaining to the source of the sound, to further narrow the required field of view of the laser ToF system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.