EC474 Principles of Modern Sonar Systems

Course Name: 

EC474 Principles of Modern Sonar Systems


B.Tech (ECE)


Programme Specific Electives (PSE)

Credits (L-T-P): 

(3-1-0) 4


Sound: wave motion, sound pressure etc. Arrays: Need for projector arrays, Need for hydrophone arrays etc. Propagation of Sound in the Sea : Propagation loss, Losses: Spreading losses, Absorption losses. Target Strength: Definition, Formulae, Measurement, Dependence on pulse type and duration. Noise in Sonar Systems: Sources of nose, Thermal noise, Noise from the sea, Noise from a vessel. Reverberation: Sources of reverberation, Scattering and reflection; The Sonar Equations: What are they? What are their uses? The basic sonar equation, The basic passive equation; Passive Sonar: Radiated noise, Radiated noise: source level, nature of radiated noise. Active sonar: Pulse types, CW processing, FM processing, Active sonar equations.


A. D. Waite, Sonar for practicing Engineers, 3rd edition, Wiley, 2002.
Principles of sonar performance modelling, Michel A Ainslie, Springer,2010.


Electronics and Communication Engineering(ECE)

Contact us

Dr. Ashvini Chaturvedi,  Professor and Head, 
Department of E&C, NITK, Surathkal
P. O. Srinivasnagar,
Mangalore - 575 025 Karnataka, India.

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