Return point route searching for vehicle navigation

Details Return point route searching for vehicle navigation Return point route searching for vehicle navigation

1996-10-08

1999-06-15

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701209, 701211, 340988, G06F16500

Patent

active

059117753

ABSTRACT:
A vehicle navigation system copes with the situation when the vehicle deviates from a guided route (is off-route) and it is desired to reach the destination efficiently, i.e. with the least travel distance. The system determines the most efficient route to return to the guided route by analyzing the shortest distance between the current vehicle position and an unpassed road intersection on the original guided route, by searching for unpassed intersections on the original guided route within a particular radius of the current off-route vehicle position. The vehicle speed and heading angle are also used to determine the search radius, to find the shortest return route to the original guided route.

REFERENCES:
patent: 4926336 (1990-05-01), Yamada
patent: 5270937 (1993-12-01), Link et al.
patent: 5414630 (1995-05-01), Oshizawa et al.
patent: 5592382 (1997-01-01), Colley
patent: 5652706 (1997-07-01), Morimoto et al.
patent: 5675492 (1997-10-01), Tsuyuki
patent: 5684696 (1997-11-01), Rao et al.

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