UNDER STRUCTURE SURVEY SYSTEM FOR TRACK

PROBLEM TO BE SOLVED: To provide an under structure survey system for a track capable of reducing an influence of reflection by a steeper. SOLUTION: This under structure survey system 20 for the track has a carriage 22 movable along the track 14 provided with the steepers 16. At least one transmissi...

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Bibliographische Detailangaben
Hauptverfasser:	OKA FUJIO, AKIYAMA YASUYUKI, TAMURA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES DETECTING MASSES OR OBJECTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MACHINES FOR MAKING RAILWAYS OF ALL KINDS MEASURING OTHER AUXILIARY EQUIPMENT FOR RAILWAYS PERFORMING OPERATIONS PERMANENT WAY PERMANENT-WAY TOOLS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION RAILWAYS TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an under structure survey system for a track capable of reducing an influence of reflection by a steeper. SOLUTION: This under structure survey system 20 for the track has a carriage 22 movable along the track 14 provided with the steepers 16. At least one transmission antenna 10 is provided in the carriage 22 to emit a radio wave toward an under side of the track 14. A pair of reception antennas 12 (12a, 12b) are also attached to the carriage 22. The transmission antenna 10 and the reception antennas 12 are arranged in series in a direction along the track 14. The transmission antenna 10 is separated from the reception antennas 12 in the direction along the track 14. COPYRIGHT: (C)2007,JPO&INPIT