Accession Number : AD0752086
Title : Field Tests of a Device for Rapid Shallow Subsurface Exploration (Tunnel Detection).
Descriptive Note : Research and development technical rept.,
Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
Personal Author(s) : Johnson,Ronald F.
Report Date : SEP 1972
Pagination or Media Count : 17
Abstract : A new device for locating underground obstacles and tunnels is described. Field tests of an experimental model of this device include measurements taken on soil which contained no obstacles, as well as, data on ground containing a cased and an uncased tunnel. Favorable results obtained for both tunnels are compared to the data taken where no subsurface obstacles were present. (Author)
Descriptors : (*ELECTROACOUSTIC TRANSDUCERS, RELIABILITY(ELECTRONICS)), (*UNDERGROUND STRUCTURES, DETECTION), CIRCUITS, PULSE AMPLIFIERS, PHASE DETECTORS, SEISMIC WAVES, PHASE MEASUREMENT, RECORDING SYSTEMS, ANOMALIES
Subject Categories : Electrical and Electronic Equipment
Seismic Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE