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ATI's Underwater Acoustic System Analysis course
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Summary:
This four-day course is based upon the text Underwater
Acoustic System Analysis by William Burdic. The course
presents the fundamentals of underwater acoustics,
acoustic signal generation and acoustic signal processing
in sufficient depth to permit the analysis and optimization
of the performance of underwater systems. The sonar
systems include a variety of applications including active
and passive detection of surface and sub-surface targets,
acoustic communications, acoustic intercept and
underwater depth sounders. The course will stress the
required skills and techniques for system analysis and
performance prediction.
The generation, propagation and reception of
underwater sound will be covered in depth. Practical
hydrophone and projectors will be considered for optimum
sensitivity and efficiency. Special attention is given to the
spatial correlation and directionality of the ambient noise
field. The gain of an array in nonisotropic noise is
developed using the spatial correlation function. Two
lectures are devoted to the theory and practice of
performance analysis for underwater acoustic systems.
The course is recommended for scientists or engineers
interested in analyzing system performance in a realistic
sonar environment. The course provides both the
theoretical basis for system analysis and many examples
illustrating the techniques for practical passive and active
sonar systems. The text Underwater Acoustic System
Analysis and an extensive set of notes will be supplied.
Instructors:
William Burdic received his BS and MS at Oregon
State University. He served as an instructor in the
Department of Electrical Engineering, Oregon State
University when he joined Rockwell International. He has
been engaged in the analysis and design of advanced radar
and sonar systems. He is the author of two books “Radar
Signal Analysis” and “Underwater Acoustic System
Analysis”.
William Burdic received his BS and MS at Oregon
State University. He served as an instructor in the
Department of Electrical Engineering, Oregon State
University when he joined Rockwell International. He has
been engaged in the analysis and design of advanced radar
and sonar systems. He is the author of two books “Radar
Signal Analysis” and “Underwater Acoustic System
Analysis”.
James W. Jenkins joined the Johns Hopkins University
Applied Physics Laboratory in 1970 and has worked in
ASW and sonar systems analysis. He has worked with
system studies and at-sea testing with passive and active
systems. He is currently a senior physicist
investigating improved signal processing
systems, APB, own-ship monitoring, and
SSBN sonar. He has taught sonar and
continuing education courses since 1977
and is the Director of the Applied
Technology Institute (ATI).
joined the Johns Hopkins University
Applied Physics Laboratory in 1970 and has worked in
ASW and sonar systems analysis. He has worked with
system studies and at-sea testing with passive and active
systems. He is currently a senior physicist
investigating improved signal processing
systems, APB, own-ship monitoring, and
SSBN sonar. He has taught sonar and
continuing education courses since 1977
and is the Director of the Applied
Technology Institute (ATI).
Course Outline:
- Introduction to Sonar Analysis: Historical overview; important
acoustical properties and characteristics; Acoustical Waves;
Reflections and Refraction in the Ocean; Units and db.
- Sound Propagation In The Ocean: Sound Speed Variation in the
ocean with variation in temperature, depth, salinity; Geographic
Variation; Acoustic bottom and surface losses; absorption losses;
Typical propagation modes; surface layer; shallow channels; deep
channels; convergence zones; RAP; Typical Propagation Curves.
- Ambient Noise in the Ocean: Sources of noise; shipping; wind
generated; thermal; others; Noise spectra; ambient noise angular
distribution and correlation properties; use of the spatial correlation
function in system calculations.
- Target Characteristics: Passive signature sources including
propulsion, propeller, auxiliary machinery, flow-induced noise; effect
of self-generated noise on sonar performance; Target strength for
monostatic and bistatic sonars; Reverberation from volume, surface
and bottom.
- Acoustic Transducers: Definitions, piezo-ceramic properties;
Hydrophone configurations; equivalent circuits and sensitivity;
Projector configurations, equivalent circuits, efficiency and operation.
- Beamforming-Spatial Filtering: Purpose and types of beamforming;
spatial filters, multi-element arrays, array shading functions; beam
steering; gain of arrays in distributed noise; angle estimation.
- Performance Analysis-Statistical Basis: Hypothesis testing and
optimum detection processors for active and passive systems; ROC
curves; Estimation of time delay, frequency and bearing..
- Performance Analysis: Practical examples; Examples illustrating the
analysis of sonar systems; passive narrowband and broadband
detection; passive angle tracking and ranging; High-power system
detection for multipath reverberation and noise-limited conditions with
Doppler Processing.
Tuition:
Tuition for this four-day course is $1695 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.
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