Distance measuring device and method for determining a distance
US10401483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2017 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/894
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a distance between a distance measuring device and an object includes the steps of illuminating the object with a short light pulse and long light pulses, outputting a signal value Uref at the end of an integration gate with an invariable delay between the emission start point in time of the short light pulse and integration start point in time Δs, forming a convolution function fc:=U(τ) from the intensity of the light arriving on the photo element and Δs with a respective variable delay τ for each long light pulse between the emission start point in time of the long light pulses and the integration gate, the variable delays being different from each other to form the convolution function, identifying the delay τc in the convolution function which corresponds to Uref, and calculating the distance by using the delay τc in the convolution function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.