Radar interrogation System for Toll Vehicle Identification

The base radar unit (1) has an interrogation generator (13) with transmitter (14) and antenna (16) transmitting the transmitter signals. The moving vehicle has an on-board receiver, and receives the signal and sends back a coded message. The base unit receives the returned signal through the antenna...

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Bibliographische Detailangaben
Hauptverfasser:	USUI, RYUZABURO, KAMAKURA, KANAGAWA, JP, FUJISAKA, TAKAHIKO, KAMAKURA, KANAGAWA, JP, YAMAMOTO, KAZUHIKO, KAMAKURA, KANAGAWA, JP, IWAMOTO, MASAFUMI, KAMAKURA, KANAGAWA, JP, KONDO, MICHIMASA, KAMAKURA, KANAGAWA, JP
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CHECKING-DEVICES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES FARE-REGISTERING APPARATUS FRANKING APPARATUS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TICKET-ISSUING APPARATUS
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Beschreibung
Zusammenfassung:	The base radar unit (1) has an interrogation generator (13) with transmitter (14) and antenna (16) transmitting the transmitter signals. The moving vehicle has an on-board receiver, and receives the signal and sends back a coded message. The base unit receives the returned signal through the antenna, and passes the signal to a receiver (17). The modulated signals are demodulated (19) and compared with stored information (20), to provide the vehicle identification.