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Portable Electronic Intelligence (ELINT) systems

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October 23, 2026

Prelims: Current events of national and international importance | Defence

Why in news?

The  DRDO is advancing a new generation of man-portable Electronic Intelligence (ELINT) systems meant to pick up and analyse the signals emitted by enemy radars and others.

  • Portable Electronic Intelligence (ELINT) systems – These are compact, man-portable or lightweight sensor suites designed to passively intercept, record, analyse, and locate non-communication electromagnetic emissions—primarily from hostile radars, antennas, and rogue drones.
  • Development – DRDO's Hyderabad-based Defence Electronics Research Laboratory (DLRL).
  • Working – It captures signals from radars and other electronic equipment and studies them to work out what kind of system is operating and its technical characteristics.
  • A radar or a drone operator could be emitting signals, which could inform about the frequency range of the device sending out signals, pulse width, signal strength, and direction of arrival.
  • This could help jam the system more effectively, focusing on those particular frequencies and thereby reducing the effectiveness of the system.
  • It classifies different types of radars, including search, tracking, and fire-control radars and helps troops locate signal sources using techniques such as triangulation.
  • 3 phases of project – Development, integration and qualification.
    • Development will cover the equipment and its modules,
    • Integration brings the parts together into one working system, and
    • Qualification tests it against technical and environmental standards, including temperature, humidity, vibration, shock and electromagnetic interference.
  • Significance of Portability – It is designed to be lightweight and easily deployable, especially in mountainous and remote terrain, where deploying large vehicles or fixed surveillance equipment could be difficult.
  • It allows frontline units to monitor electronic activity independently without relying on larger assets.
  • Counter-Drone Capability – By detecting electronic emissions, the system can
    • Identify the location of hostile drone operators.
    • Provide early warning of incoming drones.
    • Give troops additional time to activate counter-drone measures and defensive responses.

elint-system.jpeg.upsc

Reference

TOI | DRDO develops portable system to sniff out enemy radars, track drone threats

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