Indian Sonar System cleared For Export

[Zarvan]

Abhay Compact Hull Mounted Sonar System

India plans to export an integrated sonar system designed for small naval platforms meant for coastal surveillance.

The system called ‘Abhay’ will be deployed on three Abhay-class corvettes in operation with the Indian Navy, The Hindu reported today quoting a spokesperson of a laboratory of India's Defense Research and Development Organisation (DRDO) as saying.

The Abhay sonar is capable of detecting, localising, classifying and tracking sub-surface and surface targets in both its active and passive modes of operation. A prototype of the system, installed on a naval platform, has successfully completed all user evaluation trials as stipulated by the Naval Staff Qualification Requirements.

On Friday, including compact Hull Mounted Sonar Abhay, four Naval Systems developed by DRDO will be handed over to the Indian Navy Chief of the Naval Staff Admiral Sunil Lanba from defense minister.

The DRDO’s Naval Physical and Oceanographic Laboratory (NPOL) will also be delivering a distress-alert underwater sensor system that enables quick rescue of submariners in case of an eventuality to the Navy. Nine of the submarine distress alert systems will be installed on the Navy’s Kilo-class (Sindhughosh-class) submarines.

The deliveries also include HUMSA-UG an upgraded variant of its most successful hull-mounted sonar array system.

While the new-generation HUMSA is already in operation on vessels of various classes in the Navy, its upgraded version, HUMSA-UG with open architecture processor technologies, will be installed on seven naval ships across three classes.

A near-field acoustic characterization system NACS is a health monitoring system that will be used to determine the in-situ performance of the sonars. “It will be used to find the frequency-dependent 3-D transmission and reception characteristics of the sonar.

The NACS has been integrated with a previous variant of the HUMSA sonar, the HUMSA-NG. It will be fitted across platforms now.

Lastly, NPTOL is set to deliver AIDSS, an advanced indigenous distress alert sonar system for submarines. It is an emergency sound-signalling device that will speed up submarine rescue and salvage by indicating that it’s in distress. 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 a long period, so as to attract the attention of passive sonars of ships, nearby submarines and all types of standard rescue vessels.

http://www.defenseworld.net/news/17690/Indian_Sonar_System_cleared_For_Export#.WC3IwOZ95PY

 

[Hindustani78]

Ministry of Defence

17-November, 2016 17:16 IST
Induction of DRDO developed Naval Systems into Indian Navy – A Curtain Raiser

Four Naval Systems developed by DRDO will be handed over to the Indian Navy by the Defence Minister Shri Manohar Parrikar at a function, here tomorrow. Chief of the Naval Staff Admiral Sunil Lanba will formally take over the systems from the Defence Minister which include 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. Secretary, Department of Defence R&D and Chairman DRDO Dr S Christopher will be present on the occasion.

The systems have been designed and developed by NPOL, a Kochi based premier laboratory of DRDO which has outstanding contributions and achievements in the design of SONAR systems for the Indian Navy to its credit. ABHAY is an advanced Active-cum-Passive integrated SONAR system designed and developed for the smaller platforms such as shallow water crafts and coastal surveillance/patrol vessels. Designed using the latest technology in hardware architecture and advanced signal processing algorithms, the SONAR is capable of detecting, localizing, classifying and tracking sub-surface and surface targets in both its active and passive modes of operation.

The prototype of this compact SONAR ABHAY installed onboard a nominated Naval platform has successfully completed all user evaluation trials to demonstrate the features as per the Naval Staff Qualification Requirements. Indian Navy has proposed to induct this SONAR on three of the ABHAY class ships. Intensifying the command over the high seas is the HUMSA-UG that is designed for upgrading the existing HUMSA SONAR system of the Indian Naval platforms. The hardware architecture is based on the state-of-the-art open architecture processor technologies that will enable smooth upgrade of the system capabilities. This system is proposed to be installed on seven ships of three different classes of ships.

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. The NACS has been integrated with the HUMSA-NG SONAR array and proved onboard Naval platforms and this will be fitted on all frontline ships.

NPOL has also developed AIDSS, a distress SONAR that is an Emergency Sound Signaling Device which is used to indicate that a submarine is in distress and 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. It is also provided with a transponder capability. With the induction of these four systems, the underwater surveillance capability of the Indian Navy will get a boost, besides providing a fillip to the quest for self-reliance in this critical area of technology.