Positioning using a local wave-propagation model
US9035827B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Apr 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for assisting the calculation of the position of a receiver device (1200), by observing a transmitted signal having a known structure. The method comprises: comparing (S220) the time of arrival, at a reference position (X1), of a first portion of the signal with the time of arrival at the receiver, at an unknown position (Y1), of a second portion of the signal; obtaining (S230) a local wave propagation model of the signal, the model comprising an estimate of the direction of propagation of the signal in the neighborhood of the reference position and unknown position; and using (S240) the direction of propagation and the result of the comparison to assist in the calculation of the unknown position relative to the reference position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.