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ATI's Sonar Principles & ASW Analysis course
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Summary:
This course provides an excellent introduction to
underwater sound and highlights how sonar
principles are employed in ASW analyses. The
course provides a solid understanding of the sonar
equation and discusses in-depth propagation loss,
target strength, reverberation, arrays, array gain, and
detection of signals.
Physical insight and typical results are provided to
help understand each term of the sonar equation. The
instructors then show how the sonar equation can be
used to perform ASW analysis and predict the
performance of passive and active sonar systems.
The course also reviews the rationale behind current
weapons andsensor systems and discusses directions
for research in response to the quieting of submarine
signatures.
The course is valuable to engineers and scientists
who are entering the field or as a review for
employees who want a system level overview. The
lectures provide the knowledge and perspective
needed to understand recent developments in
underwater acoustics and in ASW. A comprehensive
set of notes and the textbook Principles of
Underwater Sound will be provided to all attendees.
View course sampler
Instructors:
Dr. Nicholas Nicholas received a B. S. degree from Carnegie-Mellon University, an M.S.
degree from Drexel University, and a PhD degree in physics from the Catholic University of
America. His dissertation was on the propagatior of sound in the deep ocean. He has been
teaching underwater acoustics courses since 1977 and has been visiting lecturer at the U.S.
Naval War College and several universities. Dr. Nicholas has more than 25 years experience
in underwater acoustics and submarine related work. He is a researcher at Penn State
University Applied Physics Laboratory (ARL)
Dr. Robert Jennette received a PhD degree in Physics from New York University in 1971.
He has worked in sonar system design with particular emphasis on long-range passive systems,
especially their interaction with ambient noise. He held the NAVSEA Chair in Underwater
Acoustics at the US Naval Academy where he initiated a radiated noise measurement program.
Currently Dr. Jennette is a consultant specializing in radiated noise and the use of acoustic
monitoring.
Contact these instructors (please mention course name in the subject line)
What you will learn:
- Sonar parameters and their utility in ASW Analysis.
- Sonar equation as it applies to active and passive systems.
- Fundamentals of array configurations, beamforming, and signal detectability.
- Rationale behind the design of passive and active sonar systems.
- Theory and applications of current weapons and sensors, plus future
directions.
- The implications and counters to the quieting of the target’s signature.
Course Outline:
- Sonar Equation & Signal Detection. Sonar concepts and units. The sonar
equation. Typical active and passive sonar parameters. Signal detection,
probability of detection/false alarm. ROC curves and detection threshold.
- Propagation of Sound in the Sea. Oceanographic basis of propagation,
convergence zones, surface ducts, sound channels, surface and bottom
losses.
- Target Strength and Reverberation. Scattering phenomena and submarine
strength. Bottom, surface, and volume reverberation mechanisms. Methods
for modeling reverberations.
- Elements of ASW Analysis. Fundamentals of ASW analysis. Sonar
principles and ASW analysis, illustrative sonobuoy barrier model. The use
of operations research to improve ASW.
- Arrays and Beamforming. Directivity and array gain; sidelobe control,
array patterns and beamforming for passive bottom, hull mounted, and
sonobuoy sensors; calculation of array gain in directional noise.
- Passive Sonar. Illustrations of passive sonars including sonobuoys, towed
array systems, and submarine sonar. Considerations for passive sonar
systems, including radiated source level, sources of background noise, and
self noise.
- Active Sonar. Design factors for active sonar systems including transducer,
waveform selection, and optimum frequency; examples include ASW sonar,
sidescan sonar, and torpedo sonar.
- Theory and Applications of Current Weapons and Sensor Systems. An
unclassified exposition of the rationale behind the design of current Navy
acoustic systems. How the choice of particular parameter values in the sonar
equation produces sensor designs optimized to particular military
requirements. Generic sonars examined vary from short-range active mine
hunting sonars to long-range passive systems.
Tuition:
Tuition for this four-day course is $1995 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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