SONAR - GS questions based on daily current affairs

ANSWER: AIDSS

Explanation:

• 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.

ANSWER: SONAR systems

Explanation:

• 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.
• All of these have been developed by DRDO for the Indian Navy. 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.