Min Lu Lu

US Patent:

57748241, Jun 30, 1998

Filed:

Aug 24, 1995

Appl. No.:

8/518639

Inventors:

Donald A. Streit - State College PA
Brian J. Gilmore - Centre Hall PA
Min Lu - Harrisburg PA
Michael A. Pusateri - State College PA

Assignee:

The Penn State Research Foundation - University Park PA

International Classification:

G06F16500
G08G 1123

US Classification:

701207

Abstract:

A map matching navigation system for monitoring vehicle state characteristics including the location of a vehicle on a map route. The map matching navigation system may operate in a fixed mode wherein the map route is inputted by a user or a flexible mode wherein the map matching navigation system determines the map route from a plurality of measured points which correspond to the location of the vehicle. The map matching navigation system additionally updates the location of the vehicle at a plurality of positions on the map route wherein the vehicle location is known with an increased level of confidence.