Determining distance between two radio transceivers
US12181600B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Apr 24, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining a distance between an initiator radio transceiver and a reflector radio transceiver is provided. The method comprises the initiator radio transceiver transmitting a first radio signal at a first transmission time and the reflector radio transceiver receiving the first radio signal at a first reception time. The reflector transceiver samples the first radio signal using a sampling clock signal having a sampling period and determines a first reception-time value at a temporal resolution that is finer than the sampling period, including a fractional component representative of a fraction of the sampling period. The reflector transceiver transmits a second radio signal at a second transmission time that is offset from the sampling clock signal by an amount that depends on said fractional component so as to provide a predetermined dwell time that is determined to an accuracy finer than the sampling period. The initiator radio transceiver receives the second radio signal at a second reception time and determines a distance value representative of a distance between the initiator radio transceiver and the reflector radio transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.