JPH0582636B

A navigator system for providing in a moving vehicle a display of the position of the vehicle on a map. This position is recalibrated by a roadside antenna that transmits a split beam so that the signal is a minimum directly in front of the antenna. The on-board navigator recalibrates the position f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SHIBANO YOSHIZO
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SIGNALLING TESTING TRAFFIC CONTROL SYSTEMS TRANSMISSION
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Beschreibung
Zusammenfassung:	A navigator system for providing in a moving vehicle a display of the position of the vehicle on a map. This position is recalibrated by a roadside antenna that transmits a split beam so that the signal is a minimum directly in front of the antenna. The on-board navigator recalibrates the position from data transmitted immediately before when the received signal is abruptly decreased as the vehicle passes directly in front of the antenna.