Sonar Principles & ASW Analysis Training
Sonar Principles & ASW Analysis Training Course Description
This three-day Sonar Principles & ASW Analysis Training 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.
• 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.
With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.
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.
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.
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