Object Detection in Oceanic Sediments Using Quadratic Detectors and Wavelets
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MARINE GEOSCIENCES DIV
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Methods for processing parametric broadband sonar returns are presented with the goal of locating buried objects from clutter. A gain correction algorithm based on wavelets is employed to correct for frequency dependent signal losses in multiple frequency bands. Quadratic detectors are designed to filter in time, frequency, and spatial domains simultaneously. These normalized quadratic detectors are shown to successfully isolate regions with similar characteristics by exploiting spectral and temporal features in both horizontal and vertical directions.
- Physical and Dynamic Oceanography
- Acoustic Detection and Detectors