Efficient secure phase-based ranging using loopback calibration
US11595783B2 · kind B2 · utility
1Cited by
1References
20Claims
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Key dates
| Filing date | Jun 7, 2021 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Sep 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/84
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for an efficient secure phase-based ranging using loopback calibration, including receiving, by a reflector during a current timeslot, an incoming constant tone (CT) signal having a phase shift; determining, by the reflector during the current timeslot or a previous timeslot, a phase shift correction value by using a receiver/transmitter (Rx/Tx) loopback path of the reflector; and/or generating, by the reflector, an outgoing CT signal having an updated phase shift by adjusting the phase shift of the incoming CT signal based on the phase shift correction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.