Navigation system using angular rate sensor

Details Navigation system using angular rate sensor Navigation system using angular rate sensor

1988-02-09

1989-11-21

Chin, Gary

Boots, shoes, and leggings

340988, 340995, 73178R, G06F 1550

Patent

active

048826898

ABSTRACT:
In a navigation system by which vehicle travel locations are detected by an angular rate sensor and a distance sensor and the detected vehicle travel locations are corrected so as to be displayed along a map road, when a detected vehicle travel angle exceeds a predetermined value under the condition that the vehicle is out of a route judge area set at each branch point, an abnormal travel is detected and alarmed while displaying an abnormal vehicle location. Further, when a travel route change cannot be determined after the vehicle has passed through the set route judge area, an abnormal location is also displayed and alarmed.

REFERENCES:
patent: 4763270 (1988-08-01), Itoh et al.
patent: 4774671 (1988-09-01), Itoh et al.
patent: 4782447 (1988-11-01), Ueno et al.
patent: 4792907 (1988-12-01), Ikeda et al.
patent: 4796189 (1989-01-01), Nakayama et al.

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