Integrity monitoring for geo-location systems
US7499710B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Nov 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/46
- 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.