Method, apparatus, and system for wireless tracking with graph-based particle filtering
US11500056B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2020 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | May 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0273
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, apparatus and systems for wireless tracking with graph-based particle filtering are described. A described wireless monitoring system comprises a transmitter transmitting a series of probe signals, a receiver, and a processor. The receiver is configured for: receiving the series of probe signals modulated by the wireless multipath channel and an object moving in a venue, and obtaining a time series of channel information (TSCI) of the wireless multipath channel from the series of probe signals. The processor is configured for: monitoring a motion of the object relative to a map based on the TSCI, determining an incremental distance travelled by the object in an incremental time period based on the TSCI, and computing a next location of the object at a next time in the map based on at least one of: a current location of the object at a current time, the incremental distance, and a direction of the motion during the incremental time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.