Navigation unit and base station
US8214147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Nov 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0289
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a navigation unit and base station used for determining location. A plurality of base stations are initialized to determine their location relative to each other. At the navigation unit, the time of arrival of at least one signal from each of the plurality of base stations is measured. From this, the location of the navigation unit relative to the plurality of base stations may be directly calculated using a closed solution. In one embodiment, a time of arrival technique is used and in another embodiment a time difference of arrival technique is used. Preferably an ultra-wide band frequency is utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.