UNDERGROUND RADAR FOR SHIELD MACHINE

To provide an underground radar for a shield machine that can more reliably detect an obstacle (for example, H-steel) expanding in various directions on a front surface in front of a shield machine travel direction even when an antenna of an underground radar device attached to an arm rotates in a c...

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Bibliographische Detailangaben
Hauptverfasser:	YAMADA SHIGEJI, YOSHIDA KIYOSHI, ISHIKAWA YASUHIRO, NOZU TOSHIMITSU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS DETECTING MASSES OR OBJECTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES EARTH DRILLING ELECTRICITY FIXED CONSTRUCTIONS GALLERIES GEOPHYSICS GRAVITATIONAL MEASUREMENTS LARGE UNDERGROUND CHAMBERS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MINING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SHAFTS TESTING TUNNELS
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