ADAPTIVE ARRAY TECHNOLOGY FOR TRANSPORTABLE LONG WAVELENGTH GROUND-BASED BISTATIC RADAR SYSTEMS

LONG WAVELENGTH GROUND-BASED MULTISTATIC RADAR SYSTEMS WHICH MAY BE IN THE HF, VHF, OR UHF BANDS OFFER POTENTIAL SOLUTIONS TO THE PROBLEMS ASSOCIATED WITH PERFORMING THE TACTICAL ARMY MISSION OF FOREWARD AREA AIR DEFENSE (FAAD) AND WEAPONS LOCATION WITH MONOSTATIC SHORT WAVELENGTH RADARS. HOWEVER, SIGNIFICANT PROBLEMS ARE ALSO INTRODUCED WITH THE USE OF THESE LONG WAVELENGTH BISTATIC RADAR SYSTEMS. THE PROBLEMS INTRODUCED ARE PRIMARILY IN THE CATEGORY OF INCREASED JAMMER SUSCEPTIBILITY AND THE INTRODUCTION OF MULTIPLE DIRECTIVE NARROW BAND INTERFERENCE SOURCES. SYSTEM CONCEPTS COUPLED WITH APPROPRIATELY SPECIALIZED SPATIAL ADAPTIVE NULLING TECHNIQUES, PROPOSED TO BE FURTHER DEVELOPED DURING THE PHASE I PROGRAM, ARE DESIGNED TO OVERCOME THE PROBLEMS ASSOCIATED WITH THE USE OF THE SUBJECT BISTATIC LONG WAVELENGTH RADAR SYSTEMS SO THAT THEIR ADVANTAGES CAN BE REALIZED IN TECHNICALLY FEASIBLE SYSTEM DESIGNS. A PHASE II PROGRAM BASED ON THE VALIDATION AND FURTHER DEVELOPMENT OF THE DEVELOPED DESIGNS BY SIMULATION EXPERIMENTS MAKES USE OF DIGITALLY RECORDED MULTIPLE CHANNEL FRONT-END-OF-THE-RADAR FIELD TEST DATA AS PROGRAM INPUTS.