Acoustical Seismic Detection System

Depending on the application requirements they include either stand alone acoustic seismic sensor or networks of acoustic sensors.

Acoustical seismic detection system.

This causes regions of increased. Acoustic location is the use of sound to determine the distance and direction of its source or reflector. The product or output of these sensors is complicated and voluminous and requires computers to condense and summarize the data for the decision maker. During the early years of its efforts afoat 1 developed and deployed a variety of detection systems including acoustic seismic and radiological to discover nuclear tests and monitor foreign nuclear activities generally such as the production of fissile materials plutonium and enriched uranium.

The type i wave and type ii waves refract toward the normal and cause air and soil particle motion. Firstly tus background is recalled then drawbacks and advantages of acoustic and seismic system are briefly discussed. Acoustic waves radiating from a sound source above the ground excite biot type i and ii compressional waves in the porous soil. Visual observation still remains important supplemented by telescopes cameras heat sensing devices low light level devices radar acoustic seismic chemical and nuclear detection devices.

Stevens institute of technology has built acoustic seismic aircraft detection asad system that demonstrated detection tracking and. Multimodal non visual sensing systems have also been proposed in particular use of acoustic sensor systems for vehicle detection and seismic sensor systems for people detection e g see 9. Passive acoustic localization of small aircraft low flying aircraft lfa may be used to smuggle illicit drugs or illegal immigrants across borders. Location can be done actively or passively and can take place in gases such as the atmosphere liquids such as water and in solids such as in the earth.