PROGRAMMABLE EMITTER SIGNATURE GENERATION

A KEY AREA OF LABORATORY TEST CAPABILITIES THAT NEEDS IMPROVEMENT IS THE SIMULATION OF REALWORLD CORRUPTION ON RADAR SIGNALS, AND THE IMPERFECTIONS IN PULSE GENERATON GENERIC TO ALL RADAR SYSTEMS. TWO PRIMARY REQUIREMENTS ARE THE SIMULATION OF MULTIPATH PHENOMENA AND UNINTENTIONAL INTRAPULSE MODULATIONS (UMOP). BOTH REQUIRE THE ABILITY TO GENERATE PRECISE AMPLITUDE, PHASE AND FREQUENCY MODULATION WITHIN THE PULSE, AND FOR MULTIPATH, TO SIMULATE THE DISTRIBUTED NATURE OF THE PULSE. THE ABILITY OF A DIGITAL RF MEMORY TO GENERATE HIGH RESOLUTION AMPLITUDE, PHASE, AND FREQUENCY MODULATIONS WITH TIMING RESOLUTIONS TO LESS THAN ONE NANOSECOND, MAKES IT A LIKELY CANDIDATE TO IMPLEMENT THE REQUIRED SIMULATION CAPABILITIES. THE AVAILABILITY OF LOW COST PROCESSOR BOARDS TO PERFORM THE REALTIME CALCULATIONS TO CONTROL THE DRFM, MAKES THIS APPLICATION OF DRFM TECHNOLOGY BOTH FEASIBLE AND ECONOMICAL. PHASE I WILL PRODUCE A SYSTEM ARCHITECTURE FOR THE APPLICATION OF DRFM TECHNOLOGY TO BOTH MULTIPATH AND INTRAPULSE MODULATION SIMULATION. THE FINAL REPORT WILL INCLUDE PERFORMANCE SPECIFICATIONS FOR THE CANDIDATE ARCHITECTURE, INCLUDING RANGES AND RESOLUTIONS FOR ALL INTRAPULSE MODULATIONS. THE REPORT WILL ALSO OUTLINE ALGORITHMS AND UPDATE RATES FOR CONTROLLING MULTIPATH SIMULATION. A DESIGN FOR AN RF GENERATOR USING A DRFM TO PERFORM PRECISE INTRAPULSE MODULATIONS WILL BE DEFINED.