A CENTER FREQUENCY/BANDWIDTH DETECTOR

THE GOAL OF THIS RESEARCH IS TO DEVELOP A PROCESSOR WHICH USES TIME-FREQUENCY TRANSFORMS TO EXTRACT THE INSTANTANEOUS FREQUENCY OF A SIGNAL IN REAL TIME. IN THE PROCESSOR, THE SIGNAL WILL BE SPLIT INTO TWO PATHS. IN ONE PATH THE SIGNAL WILL BE DIRECTED TO A DELAY LINE AND THEN TO PROGRAMMABLE FILTERS. IN THE OTHER PATH, THE SIGNAL WILL BE DIRECTED TO OUR TIME-FREQUENCY DETECTOR WHICH WILL MEASURE THE SIGNAL'S INSTANTANEOUS FREQUENCY AND GENERATE THE PROPER CONTROL SIGNALS FOR THE PROGRAMMABLE FILTERS. IN PHASE I WE WILL UNDERTAKE A MATHEMATICAL STUDY OF THE POSSIBLE TRANSFORM TECHNIQUES WHICH CAN BE USED TO DETECT THE INSTANTANEOUS FREQUENCY OF SIGNALS IN THE ESM/ELINT ENVIRONMENT AND THEN WE WILL DETERMINE METHODS TO IMPLEMENT THE TIME-FREQUENCY TRANSFORMS IN HARDWARE FOR REAL-TIME OPERATION.