Catalog Description:

• EOC 4115: Acoustics II.
  Sonar equations, underwater sound propagation, sonar system performance and design.

Pre-requisites:

• EOC 3306 (Acoustics I).

Textbook:

• Principles of Underwater Sound by Urick, R. J., McGraw-Hill.

Coordinator:

• S. Schock, Department of Ocean Engineering.

Goals/Objectives:

• The objective of the course is to provide the students with a basic and applied knowledge of underwater sound generation, propagation and reception as required in the design of sonar systems and acoustic experiments.

Course Topics:

1. Review acoustics I including complex solutions to wave equations.
2. Introduction to sonar equations.
3. Arrays and DI.
4. Sound generation.
5. Transmission loss.
6. Ambient noise.
7. Reverberation.
8. Target strength.
9. Radiated noise.
10. Detection of signals in noise.
11. Sonar design problems.

Computer Projects:

1. Development of algorithms for the computation of acoustic ray paths in oceans with depth dependent sound speed profiles.
2. Code sonar equations and create sonar performance and beam pattern plots.

Laboratory Projects:

• Offshore acoustic experiments:
  1. generation of subsurface images.
  2. generations of sidescan images and target analysis.

Grading Policy:

1. Homework problems and laboratory reports -- 30 %.
2. Two mid-term tests -- 40%.
3. Final examination -- 30%.

Course Outcomes:

1. An ability to apply the knowledge of acoustic theory to analysis of underwater sound problems.
2. Develop a practical knowledge of underwater sound propagation and sonar system design by problem solving and computer design projects.
3. Upon completion of this course students will be able to design a sonar system for any specific ocean application and perform the following design calculations:
   1. power requirements.
   2. sonar performance including probability of detecting a target, SNR and range.
   3. beam width, bandwidth and operating frequency.
   4. transducer and array size.