A PROPOSAL TO EVALUATE CAPABILITIES OF SOVIET PASSIVE SENSOR ARRAY DESIGNS

THIS IS A PROPOSAL TO USE ARRAY PROCESSING TECHNIQUES IN CONJUNCTION WITH SEISMO-ACOUSTIC WAVE MODELING TO EVALUATE THE ABILITY TO LANDBASED PASSIVE SENSOR ARRAYS TO LOCATE MULTIPLE SOURCES IN THE PRESENCE OF BACKGROUND NOISE, COMPLEX SIGNAL TRAVEL PATHS, AND MULTIPLE WAVE TYPES AND POLARIZATIONS. THE PRIMARY PURPOSE IS TO DESIGN AND NUMERICALLY QUALIFY SENSOR ARRAYS THAT MINIMIZE DETECTION THRESHOLD AND MAXIMIZE DISCRIMINATION ON A VARIABLE NUMBER OF STATIONARY OR MOVING SOURCES. THE SECOND PURPOSE IS TO EVALUATE CAPABILITIES OF OBSERVED SEISMIC AND ACOUSTIC SOVIET ARRAYS GIVEN THEIR GEOMETRY, PROBABLE INSTRUMENTATION, AND DESIGN SOURCE TYPE. RECENT ADVANCES IN GENERAL ARRAY PROCESSING ALGORITHMS YIELD NEW, ROBUST METHODS CAPABLE OF INCLUDING MULTIPLE SOURCES, ARBITRARY ARRAY GEOMETRIES, AND DIFFERENT POLARIZATIONS, ALL FROM A UNIFIED MATHERMATICAL BASIS. IN ADDITION, MODERN ACOUSTIC AND SEISMIC WAVE SOLVERS PROVIDE PRACTICAL NUMERICAL TOOLS FOR SIMULATING WAVE PROPAGATION IN THE GEOPHYSICAL ENVIRONMENT. TOGETHER, ARRAY PROCESSING AND WAVE SIMULATION TECHNIQUES ARE PRECISELY THE TOOLS NECESSARY TO DESIGN AND EVALUATE SEISMO-ACOUSTIC ARRAYS. THE OUTCOME OF THIS RESEARCH WILL BE AN EVALUATION OF ARRAY EFFECTIVENESS FOR A VARYING NUMBER OF SEPARATED MULTIPLE SOURCES, DETECTION POWER REQUIREMENTS, AND RELIABILITY WITH RESPECT TO ENVIRONMENTAL FACTORS.