Course content

The course covers reflection and transmission at interfaces, wave propagation methods such as ray tracing techniques and normal mode theory. The theories for echo formation of simple targets and reverberation from volume and surfaces are discussed and empirical values are presented and discussed. The course is problem-oriented with focus on applications for detection and localization of objects. In this his context the role and design considerations for the major system elements are discussed such as transmitter, receiver, antenna and transducer technology and signal processing algorithms.

Learning outcome

The objective is to give the foundation for the use of acoustical waves in water, starting with the development of the acoustic wave equation from basic principles. The emphasis is on sonar for localization and classification of objects, but also acoustics for communication and navigation underwater.

Learning methods and activities

Class room lectures and computer assignments. If there is a re-sit examination, the examination form may be changed from written to oral. The course may be held in English.

Compulsory assignments

• Exercises

Recommended previous knowledge

Prerequisite knowledge:
General background in mathematics and signal analysis. Some familiarity with wave propagation problems and signal analysis. No prior knowledge of acoustics required.

Course materials

Jens M. Hovem: Marine Acoustics (In press), Applied Research Laboratories, University of Texas, Austin and NTNU, Trondheim 2007. Chapter 1-11.

Credit reductions