HIGH SPEED DIGITAL ALGORITHMS FOR ADAPTIVE NULLING ARRAYS

DEGRADATION OF COMMUNICATION AND DATA LINKS BY THE PRESENCE OF INTERNATIONAL AND UNINTENTIONAL INTERFERING SIGNALS IS A MAJOR PROBLEM IN TACTICAL ENVIRONMENTS. THE USE OF HIGH SPEED DIGITAL ALGORITHMS TO CONTROL ADAPTIVE NULLING ARRAYS AND INTERFERENCE CANCELLERS IS A NECESSARY COMPLEMENT TO CURRENT SPREAD SPECTRUM AND FILTERING TECHNIQUES. THIS PROGRAM WILL INVESTIGATE MODIFICATIONS AND COMBINATIONS OF ADAPTIVE ALGORITHMS THAT EXHIBIT BOTH EXTREMELY FAST CONVERGENCE AND HIGH LEVELS OF INTERFERENCE CANCELLATION. IN ADDITION, EFFORTS WILL BE MADE TO MAXIMIZE COMPUTATIONAL EFFICIENCY, AND THE FEASIBILITY OF SYSTOLIC PROCESSING WILL BE STUDIED. THE KEY TECHNICAL PERFORMANCE CHARACTERISTICS TO BE EVALUATED ARE THE ADAPTATION TO MULTIPLE INTERFERENCE SOURCES AND THE ABILITY TO ADAPT TO CHANGES IN INTERFERENCE DOA, SYSTEM ERRORS, AND HIGHLY DYNAMIC ENVIRONMENTS.