Method for adjusting a pseudo-range model
US6487499B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for locating mobile device over a broad coverage area using a wireless communications link that may have large and unknown latency. The apparatus comprises at least one mobile device, a reference network, a position server, a wireless carrier, and a location requester. The mobile device is in communication with the wireless carrier and receives global positioning system (GPS) signals from a plurality of satellites in the GPS satellite constellation. The reference network is coupled to the position server and provides GPS data. The mobile receiver receives GPS signals, performs rudimentary signal processing and transmits the processed signals to the wireless carrier. The wireless carrier passes the signals on to the position server. The position server processes the mobile receiver's GPS data and the reference network ephemeris data to identify the location of the mobile receiver. The location is sent to the location requester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.