TIME-FREQUENCY REPRESENTATION USING AN IMPROVED WIGNER DISTRUBTION

THE OBJECTIVE OF THE WORK PROPOSED HERE IS INVESTIGATION OF A NEW TIME-FREQUENCY DISTRIBUTION TO IMPROVE THE RESPONSE OF LOFARGRAMS, CORRELOGRAMS AND OTHER IMAGES TO ACOUSTIC TRANSIENTS. THE PROPOSED TASKSARE DATA COLLECTION, IMPLEMENTATION OF A CHOI-WILLIAMS PROOF-OF-CONCEPT SYSTEM, OPTIMIZATION OF THAT SYSTEM ON REAL DATA, ESTIMATION OF ITS PERFORMANCE AND PRODUCTION OF A PRELIMINARY STATEMENT OF A PHASE II PROPOSAL. PHASE II: A REAL-TIME DISPLAY SYSTEM, COMPATABLE WITH EXISTING NAVY SYSTEMS, WILL BE DEVELOPED. PHASE III WILL SEE TRANSFER OF THIS SYSTEM INTO IUSS.