Friday 27 May 2022
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Navy inducts four indigenous sonars

New Delhi: Four indigenously developed naval systems, Abhay, Humsa-UG, NACS and AIDSS, designed to boost underwater surveillance capability, were formally inducted on Friday.

Abhay is a compact hull mounted sonar for shallow water crafts, Humsa UG is an upgrade for the Humsa sonar system, NACS is a Near-field Acoustic Characterisation System, and AIDSS  is an Advanced Indigenous Distress sonar system for submarines. These were designed by National Physical and Oceanographic Laboratory (NPOL), a Kochi based DRDO laboratory.

Abhay has been developed for the smaller platforms such as shallow water crafts and coastal surveillance/patrol vessels, while the Humsa-UG is an upgrade of the existing HUMSA sonars for Indian naval platforms. NACS determines the in-situ performance of the sonar systems which are used to find the frequency-dependent 3-D transmission and reception characteristics of the sonar.  It is also used to measure the magnitude and phase characteristics of the sonar transmission and reception electronics and the transducers. AIDSS, a distress sonar, is an emergency sound signalling which is used to indicate that a submarine is in distress and requires quick rescue and salvage.

A prototype for the sonars installed onboard a nominated naval platform have successfully completed all mandatory user evaluation trials as per the Naval Staff Qualification Requirements.

Speaking on the occasion Defence Minister Manohar Parrikar praised DRDO and the Indian Navy for the successful joint venture, and stressed on the need for greater self-reliance in critical areas of defense technology.


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