Multichannel minimum distance chirp echo detection
US11405730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Feb 7, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
One implementation of a sensing method includes: correlating a receive signal with a first channel waveform template to obtain a first channel correlation signal in which first channel echoes would be represented as peaks; correlating the receive signal with a second channel waveform template to obtain a second channel correlation signal in which second channel echoes would be represented as peaks; and varying the first channel waveform template and the second channel waveform template based on time elapsed from a measurement start time. A sensor array implementation includes: multiple acoustic transducers that operate concurrently to send acoustic bursts in different frequency channels, each of the multiple acoustic transducers configured to use the foregoing method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.