Distance measuring device and distance measuring method
US10712435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | May 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distance measuring device includes a calculating section that calculates, based on phase information acquired by a first device and a second device, at least one of which is movable, a distance between the first device and the second device. The first device includes a first transceiver that transmits three or more first carrier signals and receives three or more second carrier signals using an output of a first reference signal source. The second device includes a second transceiver that transmits the three or more second carrier signals and receives the three or more first carrier signals using an output of a second reference signal source. The calculating section calculates the distance based on a phase detection result obtained by reception of the first and second carrier signals and corrects the calculated distance based on information concerning an amplitude ratio of the first carrier signals received by the second transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.