Absolute distance measurement to dynamic targets
US10775503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | May 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring method and a distance measuring device for determining an absolute distance to a target moving at a radial movement velocity with respect to the distance measuring device, wherein a modulated transmission radiation is emitted to the target and a measurement signal is detected, such that information regarding the absolute distance to the target is attached to the measurement signal by means of at least one reference point of a frequency-dependent signal profile of the measurement signal, on the basis of a modulation phase of the reception radiation with respect to a set fundamental modulation, wherein for a set fundamental modulation frequency the deviation of said frequency value with respect to a reference point, in particular a minimum point, of the signal profile of the measurement signal is derived, namely the frequency offset and the offset direction with respect to the reference point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.