Backscatter location tracking system and method
US11668810B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Mar 27, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for locating devices that transmit, backscatter or receive a wireless signal. The method comprising using each of one or more backscatter devices to modulate and backscatter a carrier signal transmitted by a transmitter. Modulating and backscattering the carrier signal generates a backscattered modulated signal comprising a sideband. The method further comprises receiving the one or more backscattered modulated signals with a receiver. At least one of the phase or amplitude of each sideband are used to determine at least one of: the distance between the transmitter and the backscatter device by which that sideband was generated, the distance between the receiver and the backscatter device by which that sideband was generated, and the sum thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.