SAR IMAGE ENHANCEMENT TO CLEANING OUT SEA CLUTTER

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$50,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
6000
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Interspec Inc
1100 E Hector St, Conshohocken, PA, 19428
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JENHO TSAO
(215) 834-1511
Business Contact:
() -
Research Institution:
n/a
Abstract
THE EFFECTS OF SEA CLUTTERON SAR IMAGES ARE VERY PRONOUNED AND IMPAIR TARGET DETECTION AND IDENTIFICATION. A TECHNIQUE CALLED CLEAN CAN BE USED TO REMOVE THE EFFECTS OF THE DISCERNIBLE WAVE PHENOMENA PRESENT IN SAR IMAGES, REDUCE SEA CLUTTER INTENSITIES AND IMPROVE TARGET DETECTION. THE PROPOSED CLEAN TECHNIQUE WILL OPERATE ON THE FOURIER TRANSFORM OF THE IMAGE TO REMOVE STRONG SPACIAL FREQUENCY COMPONENTS WHICH ARE DUE TO THE WAVE MODULATED NATURE OF SEA CLUTTER IN THE IMAGE PLANE. TARGET INTENSITY AS A FIRST APPROXIMATION WILL NOT BE REDUCED BY APPLYING CLEAN BECAUSE THE TARGET IS PHYSICALLY SMALL IN RELATION TO THE SIZE OF THE IMAGE PLANE AND WILL HAVE ITS ENERGY SPREAD IN THE SPACIAL FREQUENCY PLANE MORE THAN THE DISTRIBUTEDSEA CLUTTER'S ENERGY. AFTER REMOVING THE SEA WAVE COMPONENTS FOUND IN THE IMAGE, AN INVERSE FOURIER TRANSFORM IS PERFORMED AND THE RESULT IS AN IMAGE WITH THE TARGETS UNAFFECTED AND THE SEA CLUTTER INTENSITY REDUCED. THIS WILL RESULT IN IMPROVED TARGET DETECTION AND IDENTIFICATION.

* information listed above is at the time of submission.

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