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ATI's Advanced Topics In Underwater Acoustics course

Summary:

    This four-day course summarizes some of the “leading-edge” topics in underwater acoustics. The course is designed for students who have already taken basic courses in acoustics or who have learned equivalent knowledge through practical work experience. In each topic the basics principles are reviewed and then current achievements and challenges are addressed. The course provides an in-depth treatment, taught by leading experts in the field, of the latest results in a selection of core topics of underwater acoustics. Its aim is to make available to practitioners results in a tutorial form suitable for people who are already informed about the basics of underwater acoustics. more info

Course Outline:

  1. Fundamentals of Under Water Acoustics: Modes, Rays and Sources (Carey /Pierce) Wave Equation, Modes and Rays, Energy, power and momentum, Metric units and the use of the Decibel, The Sonar Equations, The Active and Passive Equations, Echo, Noise, and Reverberation Level, Transient Form, Array Gain, Directivity Index, Limitations.

  2. Deep Water Sound Propagation and Modeling (Carey/Evans) Spreading Laws, Absorption, Sound Speed Structure and Oceanography, The Mixed-Layer Sound Channel, The Deep Sound Channel, Caustics and Convergence Zones, Internal Sound Channels, Propagation Theory, PE and Retracing. Sea Surface Scattering, Micro-bubble Plumes and Clouds, Volume Scattering. The Bottom Interaction, Arctic Propagation.

  3. Shallow Water Sound Propagation, Modeling and Sediment Acoustics (Pierce/ Evans) Modal Propagation, Rays and Modes, Bottom Loss, Coupled normal Modes, PE, Sediment Acoustics-Biot theory and frequency dependent attenuation. Coherency

  4. Sonar Arrays and Ambient Noise (Carey) Array Theory. Matrix Formulation and the Summation Convention, Coherence, Covariance and Array Limitations. Beam Patterns and Shading, The Product Theorem and the Mills Cross, Super-directivity, Adaptive Beam Forming, Multiplicative Arrays, Vector Sensor arrays. Noise Sources, Intermittent Sources, Man Made Noise ships and Machines, The Air Sea Boundary Interaction Zone, The Measurement of Ambient Noise, Deep-Water, Shallow-Water, Directional Characteristics, Noise in Ice-Covered Waters, Variability and statistics, Numerical Modeling of directional noise fields.

  5. Sonar Signal Processing (Sullivan) Overview, Space-Time Processing, Stochasticity, Likelihood Methods and Adaptive Processors, System Performance and Analysis, Vector Sensor Processing.

  6. Active Sonar Technology (Cable) ASW, Mines and Surveys, Reverberation Issues, Noise Issues, Gain, Target strength, Monostatic, Bistatic and Multi-Static Sonar.

  7. Environmental Impact Considerations for Underwater Sound (Ellison) Anthropogenic sound impacts on marine animals. Permit requirements and process. US Federal Regulations, NEPA, MMPA, ESA, Magnuson-Stevens Act, Coastal Zone Management Act, National Marine Sanctuaries Act. International regulations and guidelines. Monitoring and mitigation. 

  8. Marine Bioacoustics for Engineers (Ellison) Fundamentals of Marine Animal Hearing and Communication. Bioacoustic metrics. Acoustic exposure criteria for harm and significant behavior response for marine mammals. Developing criteria for fish and turtles. Behavioral testing techniques. 

Instructors:

Tuition:

    Tuition for this four-day course is $1895 per person at one of our scheduled public courses. Onsite pricing is available. Please call us at 410-956-8805 or send an email to ati@ATIcourses.com.