Technology Groups > Ocean Acoustics and Modelling > Introduction
The group is focusing on the research, development and implementation in significant areas of underwater acoustics such as
	Sound propagation in Ocean.
	Underwater Acoustic Scattering.
	Underwater structural acoustics.
	Acoustical Oceanography
	-Shallow water ambient noise measurement / characterization.
	-Ambient noise prediction/modeling.
	-Geotechnical study using ambient noise-Seabed classification/characterization.
	Signal processing for underwater applications .
The objectives are  :
	To undertake research activities that will lead to a better understanding of underwater acoustic signatures of various nature, the mechanism of sound propagation in the oceans, how acoustic transmissions can be employed to measure the physical properties of the ocean and its boundaries and acoustics scattering studies.
	To design and develop marine systems which includes underwater acoustic systems/devices, oceanographic systems and implementation of advanced methods of data acquisition for carrying out the above emphasized research.
	To perform data processing and analysis, and interpretation using approaches drawn from theory, numerical modeling and observations, for precise judgment.
	To upgrade the existing NABL accredited ATF and to establish a new setup for low frequency calibration of transducers and augmentation of facility for high frequency applications.
	To create a unified platform to work under the broad area of Ocean Acoustics, giving emphasis to scientific research and technology development.
Major In-house projects  :
	Development of vector sensors and array for underwater acoustic source localisation and signal estimation.
	Measurement characterisation of ambient noise in shallow waters
	Upgradation of existing NABL accredited facility and Establishing a new setup for low frequency calibration of transducers as a peripheral facility to ATF.
Inter Institutional projects  :
	Vector hydrophone array processing algorithm for source localisation. (IISc, Bangalore)
	Low frequency acoustic propagation study in shallow waters with seabed effects. (IIT,Madras).
	Development of acoustic equipment for object detection for divers. (NPL, Delhi).
	Feasibility study for the use of infrasonic sensors to predict Tsunami. (NPL, Delhi).
	Investigation of TRM and MIMO-OFDM methods for underwater acoustic communication. (IIT, Delhi).
	Acoustic characterization of sea floor and other related habitat studies using high frequency systems-Application and model and model free techniques. (NIO, Goa).
	Development of computer aided tutorials and lecture notes for training scientists and engineers in ocean acoustics. (IIT, Madras).