Navigation system using GPS data
US5948043A · kind A · utility
218Cited by
20References
68Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 8, 1996 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Nov 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for tracking an object (for example tracking an automobile as it moves over streets) using an electronic map and a GPS receiver. The GPS receiver accepts data from a number of satellites and determines a GPS derived position and velocity. Based on the previous position of the object, the GPS derived position, the velocity, the DOP and the continuity of satellites for which data is received, the system determines whether the GPS data is reliable. If the GPS data is reliable, the previous position of the object is updated to the GPS derived position. The updated position is then matched to a map of roads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.