PHASED ARRAY IMAGING IN PARTIALLY COHERENT LIGHT

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$263,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
4438
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Statcon Inc.
2208 Countryside Dr, Silver Spring, MD, 20904
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Mark J Beran
(301) 384-1256
Business Contact:
() -
Research Institution:
n/a
Abstract
WE PROPOSE TO DEVELOP A MATHEMATICAL MODEL AND ASSOCIATED NUMERICAL CODE WHICH WILL PERMIT DETERMINATION OF THE IMAGING PROPERTIES OF A PHASED-ARRAY TELESCOPE IN THE PRESENCE OF PARTIALLY-COHERENT LIGHT. THIS FORMULATION WILL INCLUDE COHERENCE EFFECTS INTRODUCED BY LONG PROPAGATION PATHS AND THE EFFECT OF COHERENCE LOSS THAT OCCURS AS A RESULT OF ATMOSPHERIC TURBULENCE. SIMPLIFIED EXPRESSIONS FOR THE AMPLITUDE IMPULSE RESPONSE OF SUCH TELESCOPES WILL BE DEVELOPED IN TERMS OF THE FREESPACE GREEN'S FUNCTION AND THE APERTURE PHASE SHIFTS. TO ILLUSTRATE THE DEVELOPED THEORY, THE IMAGE OF A RECTANGULAR SOURCE WILL BE COMPUTED WHEN THE RADIATION EMITTED BY THE SOURCE IS PARTIALLY COHERENT. FINALLY, WE SHALL SHOW HOW THE THEORY CAN BE GENERALIZED TO INCLUDE FOURTH-ORDER COHERENCE EFFECTS, AND THUS TO ENABLE US TO CALCULATE THE STATISTICAL FLUCTUATIONS OF THE IMAGE.

* information listed above is at the time of submission.

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