Reverberation, Sediment Acoustics, and Targets-in-the-Environment
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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LONG-TERM GOALS Develop and experimentally test target scattering models as well as reverberationsedimentacoustic models. Quantitatively assess the modeling approximations possible within the fidelityspeed requirements of Navy performance estimatorssimulators. OBJECTIVES Over at least the last few decades, much of the basic research effort related to ASW has focused on low-frequency propagation the passive problem. Meanwhile, submarine technology has forced the Navy to increase its use of low and mid-frequency active sonar, in which case reverberation including clutter limits performance. Contemporaneously, active sonar MCM efforts have extended their frequencies of operation from high down to mid-frequencies. Again, in many cases, reverberation limits performance for these MCM systems. Thus the shallow water problem of acoustic scattering from a target in a waveguide, as well as character of the associated reverberation, continues to be both an applied and basic research problem of some significance over a broad range of frequencies.
- Undersea and Antisubmarine Warfare