Differential GPS corrections using virtual stations
US7711480B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2005 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/258
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for providing GPS pseudorange correction and carrier phase correction information for navigation or surveying activities over a selected geographic region S of arbitrary size. In a navigation mode, a virtual reference station (VRS), positioned near a selected location L, receives differential GPS (DGPS) correction signals, translates these signals into a selected format, and broadcasts this DGPS information in this format for use by a local user. In a survey mode, the VRS receives corrected GPS information, translates this information into a selected format and broadcasts this translated and corrected GPS information and the VRS location, for use by a mobile station in forming a baseline vector from the GPS mobile station to the VRS location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.