Indian Navy Inducts 4 Types Of Indigenous Sonars Set To Boost Underwater Surveillance

The Logical Indian

November 18th, 2016 / 6:56 PM

Indian Navy Inducts Sonars To Boost Underwater Surveillance

Source: timesofindia | Image Courtesy: wikimedia

Indian Navy Inducts Sonars To Boost Underwater Surveillance

The Indian Navy on Friday inducted four new types of indigenously developed sonars that are set to bolster the underwater surveillance capability.

The systems included Abhay – compact hull mounted sonar for shallow water crafts, Humsa UG – upgrade for the Humsa sonar system, NACS – Near-field Acoustic Characterisation System, and AIDSS – Advanced Indigenous Distress sonar system for submarines.


What is Sonar?

Sonar (an acronym for Sound Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with, or detect objects on or under the surface of the water, such as other vessels.


Defence Minister Manohar Parrikar handed over the sonars to the Navy and praised the force along with Defence Research and Development Organisation (DRDO), and said he expects more synergy in the coming days.

The system has been developed and designed by Naval Physical and Oceanographic Laboratory (NPOL), a DRDO laboratory based in Kochi, Kerala.

The four systems will make the Indian navy self-reliant in the critical area of surveillance technology.

The technology that has been used in Abhay is an advanced active-cum-passive integrated sonar system which has been designed and developed for the smaller platforms such as shallow water crafts and coastal surveillance or patrol vessels. Abhay is capable of detecting, localising, classifying, and tracking sub-surface and surface targets in both its active and passive modes of operation.

The prototype of this compact sonar has successfully completed all user evaluation trials to demonstrate the features as per the Naval Staff Qualification Requirements.

Humsa-UG, designed for upgrading the existing Humsa sonar system, is built to prevail its command over high seas. This system is proposed to be installed on seven ships of three different classes.

AIDSS, a distress sonar, is an Emergency Sound Signalling Device which is used to indicate that a submarine is in distress to enable quick rescue and salvage. It is a life-saving alarm system designed to transmit sonar signals of a pre-designated frequency and pulse shape in an emergency situation from a submarine for long period, so as to attract the attention of passive sonars of ships or submarines in the vicinity and all types of standard rescue vessels in operation.


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