Global positioning system roadside integrated precision positioning system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 6, 2003
Grant Date -
Mar 20, 2003
app pub date -
Jul 3, 2002
filing date -
Jan 5, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A real-time integrated navigation system for a vehicle includes a GPS receiver, connected to a first antenna, where the GPS receiver receives GPS data from satellites and outputs GPS position data. The system also includes a communications link, connected to a second antenna and to the GPS receiver, receiving range and carrier phase measurements from at least one base station. The system further includes navigation aids which provide relative position data of said vehicle and a Kalman filter, connected to the output of the GPS receiver and the navigation aids, that integrates the GPS position data and the relative position data and outputs smoothed position data. The smoothed position data is used in transportation applications, especially detection of lane departure. This GPS-based positioning system is suitable for highway speeds during all weather conditions.
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