SIGNAL PROCESSING ARCHITECTURE FOR A DISTRIBUTED SPARSE ARRAY (DSA) RADAR SYSTEM

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 5998
Amount: $497,000.00
Phase: Phase II
Program: SBIR
Awards Year: 1988
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
1100 E Hector St, Conshohocken, PA, 19428
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr E Hesham Attia
 (215) 834-1511
Business Contact
Phone: () -
Research Institution
N/A
Abstract
WE PROPOSE TO DEVELOP A NOVEL SIGNAL PROCESSING ARCHITECTURE FOR THE DISTRIBUTED SPARSE ARRAY (DSA) RADAR. THE SYSTEM IS A SPACE-BASED, THINNED PHASED ARRAY RADAR IN WHICH EACH ARRAY ELEMENT IS A SEPARATE SPACECRAFT (CALLED A MINI-RADAR). MINI-RADARS COOPERATE TO FORM A SINGLE COHERENT RADAR BEAM. THE NEW ARCHITECTURE DISTRIBUTES SIGNAL PROCESSING ALMOST EQUALLY THROUGHOUT THE MINI-RADARS AND ALLOWS FOR PROCESSING RECONFIGURATION IN THE EVENT OF A SINGLE (OR EVEN MULTIPLE)MINI-RADAR FAILURE OR DESTRUCTION. THE KEY IDEA IS TO DISTRIBUTE ARRAY PROCESSING AMOND THE SPACECRFT ACCORDING TO RANGE OR DOPPLER SHIFT. THIS IS DONE BY DIVIDING THE TOTAL RANGE/DOPPLER INTERVAL COVERED INTO N EQUAL RANGE/SOPPLER SUBINTERVALS AND ASSIGNING EACH SUBINTERVAL TO ONE OF THE MINI-RADARS FOR PROCESSING. IN OTHER WORDS,EACH MINI-RADAR BECOMES THE CENTRAL PROCESSOR OR "MASTER" FOR A PARTICULIAR GROUP OF RANGE/DOPPLER BINS. RECONFIGUREABILITY OF PROCESSING IN THE EVENT OF A LOSS OF ONE OR MORE MINI-RADARS IS STRAIGHTFORWARD: DIVIDE THE TOTAL NUMER OF RANGE/DOPPLER BINS OF INTEREST EQUALLY AMONG THE SURVIVORS. WE SHOW THAT THIS PROCESSING STRATEGY REQUIRES A MINIMUM OF DATA STORAGE AND GOES HAND-IN HAND WITH STATE-OF-THE-ART SELF-COHERING, BEAM NULLING, AND CLUTTER REJECTION TECHNIQUES.

* 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
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government