Location determination using weighted ridge regression
US6587692B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2000 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Weighted ridge regression (WRR) processing is applied to three or more distance measurements to determine the location of a terminal. For example, in an integrated satellite-based navigation system/wireless network, the location of a mobile unit can be determined by applying WRR processing to at least three distance measurements, where one or more of the distance measurements are satellite-based distance measurements (e.g., GPS pseudorange measurements) and one or more are wireless network-based distance measurements (e.g., round-trip delay or pilot phase offset measurements). WRR processing provides improved accuracy in the determination of mobile unit position over conventional least mean square techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.