Optical correlation apparatus and method
US8098712B2 · kind B2 · utility
1Cited by
5References
5Claims
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Key dates
| Filing date | Oct 20, 2005 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Oct 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/325
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Optical correlators are discussed, suitable for in-vehicle distance measurement. The correlators use modulation sequences based on maximal length sequences. A number of different modulation sequences are obtained by generator (32) from a single maximal length sequence, either by adding a variable number of cycles to the end of the maximal length sequence or by starting the maximal length sequence at different points in the sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.