Laser rangefinder and method for digital signal processing thereof
US8103059B2 · kind B2 · utility
2Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4876
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for digital signal processing is disclosed. Reflected laser signals are received and digitized to generate corresponding digital signals. The digital signals are accumulated to generate an accumulated signal. A digital filtering operation is applied to the accumulated signal to generate a filtered signal. A maximum signal value for the filtered signal is found and a threshold value is set accordingly. It is determined whether the maximum signal value is less than the threshold value, and, if not, a distance value is calculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.