Accession Number : ADD006465

Title :   Seismic Apparatus for Discrimination between Track-Type Vehicles and Wheel-Type Vehicles.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Barnes,Roswell P , Jr ; Fellows,Glenn E

Report Date : 19 Jun 1979

Pagination or Media Count : 6

Abstract : A vehicle identifying circuit comprising: means for detecting seismic vibrations created by passing vehicles and converting them into electrical impulses; frequency-sensing circuit means coupled to said detecting means for producing electrical signals in accordance with the frequency characteristics of said impulses, said frequency-sensing circuit means comprising an amplifier, a clipper circuit, a differentiator circuit, a rectifier and an integrator coupled in sequence to produce said electrical signals; and vehicle discriminating circuit means coupled to said frequency-sensing means to convert said signals into output pulses having voltage levels indicative of the character of the suspension system of the passing vehicle. (Author)

Descriptors :   *Patents, *Seismic detection, *Military vehicles, Wheels, Tracked vehicles, Target discrimination, Seismic signatures, Pulses, Frequency

Subject Categories : Seismic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE