DATA COMPRESSION FOR ACOUSTIC SURVEILLANCE DATA

THE TREND IN ACOUSTIC SURVEILLANCE DEVELOPMENT IN THE LAST DECADE HAS BEEN FOR A GREATER NUMBER OF ACOUSTIC ARRAYS, EACH WITH A GREATER NUMBER OF SENSORS, AND AS A CONSEQUENCE A GREATER NUMBER OF BEAMS TO BE PROCESSED, TRANSMITTED, AND STORED. IN THE FUTURE THE QUANTITY WILL CONTINUE TO INCREASE. AT THE SAME TIME THERE IS A REQUIREMENT TO IMPROVE THE QUALITY OF THE DATA WHICH IS STORED AND TRANSMITTED TO SUPPORT SURVEILLANCE OF NONTRADITIONAL SIGNALS AND TO MONITOR LONG RANGE ACTIVE SIGNALS. IT IS THE OBJECTIVE OF THE PROJECT PROPOSED HERE TO PROVIDE A METHOD TO MORE EFFICIENTLY MAKE USE OF STORAGE AND TRANSMISSION RESOURCES AND TO PROVIDE IMPROVED DATA FIDELITY. THIS IS TO BE ACCOMPLISHED BY THE DEVELOPMENT OF EFFICIENT DATA COMPRESSION ALGORITHMS, AND ACCOMPANYING MESSAGE FORMATS, WHICH CAN BE INTRODUCED DIRECTLY INTO THE EXISTING IUSS. THESE SAME ALGORITHMS AND TECHNIQUES HAVE BROAD APPLICABILITY TO THE TRANSMISSION OF DATA OF ALL TYPES. WE PROPOSE TO FIRST APPLY THE ALGORITHMS TO THE SURTASS SYSTEM, WHERE SIGNIFICANT IMPROVEMENTS I DATA TRANSMISSION AND STORAGE WILL BE REALIZED.