ATI's Advanced Topics In Underwater Acoustics course

Summary: This three-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. Course Outline: 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. 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. 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 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. Sonar Signal Processing (Sullivan) Overview, Space-Time Processing, Stochasticity, Likelihood Methods and Adaptive Processors, System Performance and Analysis, Vector Sensor Processing. Active Sonar Technology (Cable) ASW, Mines and Surveys, Reverberation Issues, Noise Issues, Gain, Target strength, Monostatic, Bistatic and Multi-Static Sonar. Instructors: Peter G. Cable received the B.A. degree in physics and mathematics from Haverford College, Haverford, PA, in 1958, the M.A. degree in physics from Columbia University, New York, NY, in 1960, and the Ph.D. degree in physics from the University of Maryland, College Park, MD, in 1966. He subsequently joined the staff of the Naval Underwater Sound Laboratory (now the Naval Undersea Warfare Center) and remained there until 1985, except for the academic years 1969 and 1970 when he held a faculty appointment at the Institute for Fluid Dynamics and Applied Mathematics, University of Maryland. In 1985, he joined BBN Systems and Technologies, New London, CT, where he was engaged in acoustic signal processing and sonar system studies. He was a Principal Scientist at BBN Technologies and is currently a Consultant to the Applied Physical Systems in Groton, Ct. His specific research interests include the areas of stochastic effects in underwater sound transmission, statistical communication and detection theory, and the modeling of self and radiated noise and reverberation. Dr. Cable was a NASA Pre-Doctoral Fellow at the University of Maryland, and is a Fellow of the Acoustical Society of America and of the Connecticut Academy for Education is Mathematics, Science and Technology, and Treasurer of the Connecticut Academy of Science and Engineering. William Carey received the B.S. degree in Mechanical Engineering, the M.S. degree in Physics, and the Ph.D. degree in Nuclear Science from The Catholic University of America, Washington, DC, in 1965, 1968, and 1974, respectively. He was the Editor and currently serves as an Associate Editor of the Journal of Oceanic Engineering. He is also an Associate Editor for Underwater Acoustics, the Journal of the Acoustical Society of America. Currently he is a Professor of Mechanical Engineering at Boston University, an Adjunct Professor of Applied Mathematics at the Rensselaer Polytechnic Institute, and an Adjunct Scientist at the Woods Hole Oceanographic Institution. Previously, he was a Physicist with the Naval Undersea Warfare Center and the Advanced Research Projects Agency assigned to the MIT Department of Ocean Engineering, where he taught graduate courses in Acoustics. He has also been a Research Physicist and Engineer at the Naval Underwater Systems Center, The Naval Oceanographic Research and Development Activity, and the Naval Research Laboratory. At the University of Chicago's Argonne National Laboratory, he was an Associate Scientist and Section Manager of acoustic surveillance. He has been a consultant to both industry and government in the areas of nondestructive testing, nuclear science/environmental measurements, and applied ocean acoustics. Dr. Carey is an Institute of Electrical and Electronics Engineering (IEEE)-Oceanic Engineering Society Fellow and has received the IEEE-Oceanic of Engineering Society's Distinguished Technical Achievement Award, Distinguished Service Award, and an IEEE Millennium Award. He recently received the Pioneers of Underwater Acoustics Medal from the Acoustical Society of America and is Fellow of that society. He is also a full member of Sigma Xi, a member of the Connecticut Academy of Science and Engineering, and a member of the Cosmos Club. Dr. Richard Evans has contributed to the development of numerical solutions to calculate underwater sound propagation using complex oceanographic variables for the range-dependent problem of acoustic and seismic wave propagation. He developed the stepwise-coupled normal mode computational method, a benchmark solutions for range-dependent problems in underwater acoustics. Dr. Evans has conducted workshops that led to the standardization of Navy models for underwater sound propagation and geophysical inversion. Dr. Evans has worked with in the Naval R&D establishment for 31 years. He is a Fellow of the Acoustical Society of America, a member of the American Mathematical Society and the Society for Industrial and Applied Mathematics. He has contributed to our understanding of ordinary functional differential equations and has taught applied mathematics on the undergraduate and the graduate level. He has applied his understanding to the development of numerical solutions to calculate underwater sound propagation using complex oceanographic variables for the range dependent problem of acoustic and seismic wave propagation. He developed the stepwise coupled normal mode computational method, a benchmark solutions for range dependent problems in underwater acoustics. This benchmark allowed other, more approximate but efficient, methods such as the parabolic equation to be verified and accepted as a Navy Standard. The analysis of acoustic normal modes motivated an ongoing theoretical study of non-self-adjoint two-point boundary value problems and their potential for multiple (degenerate) eigenvalues. Techniques developed studying acoustic propagation have been applied to the much larger problem of modeling underwater ambient noise. Dr. Evans has conducted workshops that led to the standardization of Navy models for underwater sound propagation and geophysical inversion. Dr. Evans Has worked with in the Naval R&D establishment for 31 years and has held positions within the Naval Laboratory System and with the Science Applications International Corporation. Currently he is affiliated with the Boston University and the Rennselaer Polytechnic Institute. He is a Fellow of the Acoustical Society of America, a member of the American Mathematical Society and the Society for Industrial and Applied Mathematics. Dr. Allan D. Pierce is Professor of Aerospace and Mechanical Engineering at Boston University and Adjunct Scientist at Woods Hole Oceanographic Institution, and is also the Editor-in-Chief of the Acoustical Society of America (ASA). He received his doctorate from MIT in 1962, and has subsequently held a variety of research and academic positions, including those at MIT, Georgia Tech, Penn State. Among his honors are the receipt of the Per Bruel Gold Medal from the ASME, the Rossing Prize in Acoustics Education from the ASA, the Silver Medal in Physical Acoustics from the ASA, and, most recently, the ASA's Gold Medal. He is perhaps best known in underwater acoustics for his invention of what is now termed adiabatic mode theory, and to the acoustics community at large for his graduate-level text on acoustics. Dr. Edmund J. Sullivan Edmund J. Sullivan received the Ph.D. University of Rhode Island. Dr Sullivan served on the research and technology staff of the Naval Underwater Systems Center. He was head of the Signal Processing Group at the SACLANT Undersea Research Centre. Dr. Sullivan has published numerous journal articles, 2 encyclopedia articles, 6 book chapters, and Government reports covering the subjects of Underwater Acoustics, Signal Processing, and Electromagnetics. He has received are the IEEE OCEANS OSATES Distinguished Technical Achievement Award and the NUWC Excellence in Science Award. He is a fellow of both The Acoustical Society of America and the IEEE. He earned the bachelors and masters degrees in Electrical Engineering in 1965 and 1967, respectively, from the University of Rhode Island. In 1970 he received the Ph.D. in Nuclear Physics, also from the University of Rhode Island. Dr Sullivan served on the research and technology staff of the Naval Underwater Systems Center until February of 1985 when he was appointed head of the Signal Processing Group at the SACLANT Undersea Research Centre in La Spezia Italy, where he performed both theoretical and experimental research in matched-field processing, bispectral analysis of radiated noise, and passive synthetic aperture processing. He held this post until July of 1988. For the two years previous to the SACLANT appointment, he was the Signal Processing editor for the Journal of the Acoustical Society of America. He was the associate editor for the IEEE Journal of Oceanic Engineering for nine years, his tenure ending in 1999. He was reappointed as Signal Processing editor for the Journal of the Acoustical Society of America in 2003. Previous to his retirement he was a staff scientist for the Physics and Technology Division at the Naval Undersea Warfare Center. Dr. Sullivan has published numerous journal articles, 2 encyclopedia articles, 6 book chapters, and several NATO and Government reports covering the subjects of Underwater Acoustics, Signal Processing, Nuclear Physics, and Electromagnetics. Among the awards he has received are the IEEE OCEANS 94/OSATES Distinguished Technical Achievement Award and the NUWC Excellence in Science Award, both in 1978 and 1991. He is the holder of several patents in the areas of underwater acoustics and array processing. His present interests are in polyspectra, model-based signal processing, and synthetic-aperture array processing. He is a fellow of both The Acoustical Society of America and the IEEE, is listed in “Who's Who in American Science and Engineering.” and “American Men and Women of Science.” He is also a member of Tau Beta Pi and Sigma Pi Sigma. Tuition: Tuition for this three-day course is $1690 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. Register Now Without Obligation