ANALYSIS OF BROADBAND SUBMARINE SIGNATURES BY CHAOTIC PROCESSING METHODS

THE PROPOSED RESEARCH WILL DEVELOP AND IMPLEMENT SEVERAL METHODS OF ANALYSIS OF CHAOTIC PROCESSES AND APPLY THEM TO BROADBAND SUBMARINE SIGNATURES. SPECIFIC MEASURES INCLUDE PHASE TRAJECTORIES, POINCARE' SECTIONS, RETURN MAPS, LYAPUNOV EXPONENTS, CHAOTIC DIMENSION, AND ENTROPY. THESE MEASURES WILL BE TESTED FOR ROBUSTNESS UNDER VARYING CONDITIONS OF SIGNAL-TO-NOISE RATIO, LENGTH OF DATA SAMPLE, SAMPLING RATE, FILTERING, AND INTERNAL TECHNICAL PARAMETERS. THE TECHNIQUES WILL THEN BE TESTED ON BOTH CONTRIVED CHAOTIC TIME SERIES AND REAL SUBMARINE SIGNATURES. A SURVEY OF CURRENT CHAOS TECHNOLOGY WILL ALSO BE PROVIDED.