Ultra wideband precision geolocation system
US6054950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultra wideband (UWB) or short-pulse transmission system that enables precise tracking or geolocation of a target over distances of several kilometers. The system includes a set of N (where N>2) untethered UWB transceivers located at fixed positions, an untethered UWB receiver at the target, and a processor at the target for resolving time-of-flight measurement ambiguities of received pulses to determine precise geolocation by solving a set of equations according to time-of-flight measurements and surveyed positions of N-1 transceivers. To eliminate a clock distribution system, self-synchronizing of pulse timing is achieved by generating a start pulse at one of the untethered transceivers. Alternatively, a timing source may be provided by a GPS or other timing generator at the transceivers in order to synchronize emissions of their pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.