DOPPLER RADAR TYPE EQUAL SPEED DETECTION DEVICE

PURPOSE:To achieve an accurate speed measurement of a vehicle to be measured automatically regardless of measurement environment or personnels. CONSTITUTION:A doppler signal which indicates a relative speed with a vehicle to be measured is extracted by a doppler radar. A doppler signal is passed thr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TERAJIMA KOJI, FUJITA EIJI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	PURPOSE:To achieve an accurate speed measurement of a vehicle to be measured automatically regardless of measurement environment or personnels. CONSTITUTION:A doppler signal which indicates a relative speed with a vehicle to be measured is extracted by a doppler radar. A doppler signal is passed through a band-pass filter by a band-pass filter, thus obtaining a doppler signal which indicates that the relative speed is nearly equal. When the doppler signal which is passed through the band-pass filter continues for a specified amount of time, it is regarded that the vehicle to be measured is driving at nearly equal speed, thus enabling a command to be sent to a printer and the speed of the vehicle to be measured to be printed.