Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Industrial Co LtdfiledCriticalMatsushita Electric Industrial Co Ltd
Priority to JP8221577ApriorityCriticalpatent/JPS5417761A/en
Publication of JPS5417761ApublicationCriticalpatent/JPS5417761A/en
PURPOSE: To measure the accurate vehicle length from presence information and moving distance information by obtaining the accurate presence information from a pair of transmitters and photo detectors and further obtaining the accurate moving distance information with a Doppler radar.