FIBER OPTIC GROUND MOTION SENSOR

Award Information
Agency:
Department of Defense
Branch
Defense Threat Reduction Agency
Amount:
$49,791.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
8672
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Geo-centers Inc
7 Wells Ave, Newton Centre, MA, 02159
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
BRUCE N NELSON
(617) 964-7070
Business Contact:
() -
Research Institution:
n/a
Abstract
THE PHASE I EXPERIMENTAL EFFORT WILL DEMONSTRATE THE FEASIBILITY OF A FIELD WORTHY GROUND MOTION SENSOR TO REPLACE PIEZO-ELECTRIC ACCELEROMETERS FOR CONVENTIONAL EXPLOSIVES AND NUCLEAR TESTING. THE OUTPUT SIGNALS OF PIEZO-ELECTRIC ACCELEROMETERS MUST BE INTEGRATED TWICE TO DETERMINE GROUND MOTIONS. THIS PROCESS REDUCES SYSTEM ACCURACY AND MEASUREMENT BANDWIDTH. ADDITIONALLY, AS PIEZO-ELECTRIC SENSORS ARE ELECTRONIC IN NATURE, THEY ARE SUSCEPTABLE TO THE ADVERSE EFFECTS OF ELECTROMAGNETIC INTERFERENCE (EMI) AND ELECTROMAGNETIC PULSES (EMP). THE PROPOSED SENSOR USES AN INERTIALLY DAMPED PASSIVE REFLECTOR, AND LIGHT DELIVERY AND COLLECTION OPTICS. THE PROPOSED SENSOR OUTPUT SIGNAL IS A DIRECT MEASURE OF THE GROUND MOTION. ADDITIONAL SENSOR PROPERTIES, WHICH INCLUDE INCREASED MEASUREMENT BANDWIDTH CAPABILITY, IMMUNITY TO THE EFFECTS OF EMI AND EMP, AND IMMEDIATE COMPATIBILITY WITH FIBER OPTIC DATA TRANSMISSION LINES ENHANCE THE UTILITY OF THIS SENSOR FOR DNA MEASUREMENT APPLICATIONS.

* information listed above is at the time of submission.

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