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Proceedings Paper

Problems in seismic detection and tracking
Author(s): George P. Succi; Gervasio Prado; Robert Gampert; Torstein K. Pedersen; Hardave Dhaliwal
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Paper Abstract

One can detect and track vehicles and personnel using a three-component seismic velocity transducer. Persons or vehicles moving over ground generate a succession of impacts; these soil disturbances propagate away from the source as seismic waves. Because the soil is an elastic medium both vertical and longitudinal waves propagate, diminishing in intensity as R-2. Furthermore because the surface of the soil is the boundary of an elastic space, a Rayleigh surface wave is also generated, diminishing in intensity as R-1. This surface wave is a vector wave that can be used to track the source. In addition to the classic model of surface waves on an elastic half space we discuss special features of seismic measurements. Among these are: contamination of the seismic signal by local acoustic waves, the excess non-geometric attenuation of the seismic signal, the influence of reflections from layered soil in tracking personnel, and finally a method of ranging using the periodic impact signature of vehicles.

Paper Details

Date Published: 21 July 2000
PDF: 9 pages
Proc. SPIE 4040, Unattended Ground Sensor Technologies and Applications II, (21 July 2000); doi: 10.1117/12.392572
Show Author Affiliations
George P. Succi, SenTech, Inc. (United States)
Gervasio Prado, SenTech, Inc. (United States)
Robert Gampert, SenTech, Inc. (United States)
Torstein K. Pedersen, SenTech, Inc. (United States)
Hardave Dhaliwal, SenTech, Inc. (United States)

Published in SPIE Proceedings Vol. 4040:
Unattended Ground Sensor Technologies and Applications II
Edward M. Carapezza; Todd M. Hintz, Editor(s)

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