ELECTROMAGNETIC DETECTION OF BURIED MINES USING A SUPERCONDUCTIVE MAGENETIC GRADIOMETER

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$931,000.00
Award Year:
1985
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
140
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Physical Dynamics Inc.
P.O. Box 1883, Lajolla, CA, 92038
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
Walter Podney
(619) 454-8831
Research Institution:
n/a
Abstract
MINES BURIED IN THE SEA BOTTOM ARE OFTEN IMPOSSIBLE TO DETECT ACOUSTICALLY. ELECTROMAGNETIC ENERGY PROVIDES AN ALTERNATIVE MEANS OF DETECTION. AN ACTIVE SYSTEM FORMED BY A SOURCE CURRENT ENCIRCLING A SUPERCONDUCTIVE MAGNETIC GRADIOMETER HOLDS THE PROMISE OF PROVIDING AN UNDERWATER-TOWED SYSTEM FOR DETECTING BURIED MINES ELECTROMAGNETICALLY. THE SOURCE CAN OPERATE AT FREQUENCIES OF A FEW TENS OF HENTZ, WHICH ARE LOW ENOUGH TO PENETRATE SEAWATER EFFECTIVELY BUT HIGH ENOUGH TO EXCITE SENSIBLE EDDY CURRENTS IN METALLIC TARGETS. THEY ALSO ARE HIGHER THAN FREQUENCIES OF NOISE ARISING FROM SEAWATER MOTIONS AND TOWED BODY DSCILLATIONS. FIRST ESTIMATES SHOW THAT USEFUL DETECTION RANGES, 15 M, CAN BE ATTAINED FOR PRACTICAL SOURCE MOMENTS, 104A M2. WE PROPOSE FIELD MEASUREMENTS TO EVALUATE THE FEASIBILITY OF OPERATING A SUPERCONDUCTIVE GRADIOMETER WITHIN AN ENCIRCLING CURRENT AND TO DETERMINE THE EXPECTED IDEAL PERFOMANCE OF THE SYSTEM.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government