COLOR DISPLAY OF ACOUSTIC DATA

THIS PROPOSAL DESCRIBES AN APPROACH TO DEVELOPMENT OF A DISPLAY THAT PRESENTS SIGNAL INTENSITY AND TARGET BEARING AS FUNCTIONS OF BOTH TIME AND FREQUENCY. WITH RESPECT TO SIGNAL INTENSITY, TIME, AND FREQUENCY, THE DISPLAY IS TOTALLY ANALOGOUS TO A LOFAR DISPLAY. IN ADDITION, THE DISPLAY IMPARTS TARGET BEARING THROUGH THE USE OF COLOR. ASSOCIATION OF TONALS, HARMONICS, AND BROADBAND SIGNALS WITH TARGETS, AND, THEREFORE, TARGET CLASSIFICATION IS ENHANCED BECAUSE ALL FEATURES FROM A GIVEN TARGET APPEAR ON THE DISPLAY WITH THE SAME COLOR, I.E., FROM THE SAME BEARING. THUS, TRANSIENTS FROM A TARGET APPEAR AS A SEQUENCE OF BROADBAND BURSTS, EACH WITH THE SAME COLOR. THE OBJECTIVE OF THE PROPOSED EFFORT IS TO DEMONSTRATE THE FEASIBILITYAND EFFICACY OF THE DISPLAY WHEN APPLIED TO REAL DATA SUCH AS FROM A TOWED ARRAY. AFTER THIS CAPABILITY HAS BEEN DEMONSTRATED, THE APPLICATION OF THE DISPLAY TO OTHER SITUATIONS THAT MIGHT BENEFIT FROM A "FOUR-DIMENSIONAL" PRESENTATION BECOMES STRAIGHT-FORWARD. THE PROPOSED EFFORT INCLUDES ACQUISITION OF MEASUREMENTS SUITABLE FOR DEMONSTRATION, DEVELOPMENT, AND IMPLEMENTATION OF SIGNAL PROCESSING AND COLOR CODING ALGORITHMS, AND DEMONSTRATION OF THE FEASIBILITY AND UTILITY OF THE DISPLAY.