Sonar Systems Design Training
Sonar Systems Design Training Course Description
This 3-day Sonar Systems Design Training provides an overview of sonar systems design and highlights how sonar principles are employed in low frequency (LF), mid frequency (MF) and high frequency (HF) sonar applications. The course provides a solid understanding of the sonar equation and discusses in-depth propagation loss, target strength, reverberation, array gain, and detection of signals and their application to practical systems. Physical insight and typical results are provided to help understand each term of the sonar equation individually. The instructors then show how the sonar equation can be used to predict the performance of passive and active sonar systems. The course also reviews applications of passive and active sonar for ASW, including bistatics, for monitoring marine mammals and for high frequency detection, localization and imaging. 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. A comprehensive set of notes and the textbook Principles of Underwater Sound will be provided to all attendees. Students will also receive analysis tools that they can use to quickly assess systems performance in the ocean environment.
• Sonar equation as it applies to active and passive systems.
• Fundamentals of array configurations, beamforming, and signal detectability.
• Rationale behind the design of LF, MF and HF passive and active sonar systems.
• Predicting performance in different ocean environments using existing oceanographic databases
• Spreadsheet tools for analyzing and assessing system performance in the ocean environment
• PAM – Passive Acoustic Monitoring
• HF Active tracking of Marine Mammals
• Basic principles of target strength for ships, submarines and marine life
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. Ambient and self noise in different frequency bands.
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.
Propagation of Sound in the Sea. Oceanographic basis of propagation, convergence zones, surface ducts, sound channels, surface and bottom losses. Useful models for predicting LF, MF and HF transmission loss in different environments. Variation of transmission loss and absorption with LF, MF and HF sonars.
Passive Sonar. Illustrations of passive sonars including sonobuoys, towed array systems, and PAM systems for marine mammal monitoring. Considerations for passive sonar systems, including radiated source level, sources of background noise, and self noise. Impact of noise on marine mammals.
Active Sonar. Design factors for active sonar systems including waveform selection, target strength and reverberation for LF, MF and HF applications.
Practical Example Calculations Using Spreadsheet Tools.
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