PULSED ELECTROMAGNETIC SYSTEM FOR AIRBORNE SURVEILLANCE OF MINES IN SHALLOW WATER

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$49,435.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
6253
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Physical Dynamics Inc
Po Box 1883, La Jolla, CA, 92038
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR WALTER N PODNEY
(619) 457-3201
Business Contact:
() -
Research Institution:
n/a
Abstract
A REVIEW OF SENSOR TECHNOLOGIES SHOWS THAT ELECTROMAGNETIC ENERGY AT FREQUENCIES BELOW 1 KHZ CAN PROVIDE A RELIABLE MEANS TO DETECT, IDENTIFY, AND LOCATE MINES IN SHALLOW WATER. A PULSED ELECTROMAGNETICINSTRUMENT COMPRISING A TRANSMITTER ENCIRCLING A SUPERCONDUCTIVE MAGNETIC RECEIVER PROMISES TO PROVIDE AN AIRBORNE SYSTEM CAPABLE OF RAPIDLY LOCATING MINES. ELECTRIC CURRENT PULSES IN THE TRANSMITTER ILLUMINATE TARGETS. THE INSTRUMENT CAN PROVIDE THE ANALOGUE OF RADAR AT FREQUENCIES LOW ENOUGH TO PENETRATE SEAWATER OF DEPTH \10 M. FIRST ESTIMATES SHOW THAT A PRACTICAL TRANSMITTER MOMENT, \10,000 A M2, CAN GIVE USEFUL SWEEP RATES AT A TOW SPEED OF >200 KNOTS FOR A PATH WIDTH EXCEEDING 30 M. WE PROPOSE BOTH ANALYSES AND FIELD MEASUREMENTS WITH A PROTOTYPE INSTRUMENT TO VERIFY THE FEASIBILITY OF OPERATING A SUPERCONDUCTIVE GRADIOMETER WITHIN A PULSATING ELECTRIC CURRENT AND TO DETERMINE EXPECTED INSTRUMENT PERFORMANCE.

* information listed above is at the time of submission.

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