Moment-Based Physical Models of Broadband Clutter due to Aggregations of Fish
NAVAL RESEARCH LAB WASHINGTON DC ACOUSTICS SYSTEMS BRANCH
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LONG-TERM GOALS Contribute to a new understanding of what fish parameters control mid-frequency MF 1-10 kHz biological clutter, including the relative influence of oceanographic phenomena and provide benchmark data sets and statistical models for signal-processing algorithm development. These in turn will help to develop a capability to statistically forecast the impact of bioclutter on MF Navy systems. OBJECTIVES Develop, and refinevalidate with field data, broadband stochastic models of MF clutter due to aggregations of fish based on higher-order statistical measures describable in terms of physical and system parameters. Environmentally, these models would provide physics-based measures of acoustical uncertainty based on biological and oceanographic parameters.