Method and system for using altitude information in a satellite positioning system
US6061018A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | May 5, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining a position of a mobile satellite positioning system (SPS) receiver. In one example of a method, a cell object information is determined; this cell object information comprises at least one of a cell object location or a cell object identification. An altitude is determined from the cell object information which is selected based upon a cell site transmitter which is in wireless communication with a cell based communication system which is coupled to (and typically integrated with) the mobile SPS receiver. The position of the mobile SPS receiver is calculated using the altitude which is determined from the cell object information. In another example of a method, an altitude pseudomeasurement is determined from an estimate of an altitude of the mobile SPS receiver. This estimate of the altitude may be from a cell based information source in a cell based system or may be an average altitude of the area of radio coverage of a wireless basestation in the non-cell based system. The altitude pseudomeasurement may be used as a redundant measurement with fault detection and isolation techniques to determine whether at least one pseudorange has a faulty…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.