Enhanced Capability GNSS Jammers – Indian Navy

Why in News?

Recently, The Ministry of Defence signed a contract for procuring 20 Enhanced Capability Global Navigation Satellite System (ECGNSS) jammers for the Indian Navy.

• ECGNSS – It refers to advanced, mobile electronic warfare systems designed to disrupt, degrade, or deceive hostile satellite navigation signals specifically by jamming and spoofing.

Signal jamming – It means blocking wireless communication (signal-to-noise ratio) by sending strong interference signals on the same frequency, this creates a localized "dead zone" where legitimate signals cannot transmit or receive data devices become inoperable.

Signal spoofing – It is a cyberattack where transmitter broadcasts counterfeit radio signals to trick a receiver into trusting false data.

• Developed by – Accord Software and Systems Pvt. Ltd.

System Features

• Deceptive Jamming & Spoofing - Beyond brute-force noise jamming (which simply blocks a frequency), these enhanced capability systems specialize in signal spoofing.
• They broadcast false satellite signals that deceive hostile receivers—tricking enemy drones, cruise missiles, or vessels into calculating incorrect positioning, navigation, and timing (PNT) data.
• Electronic Warfare (EW) Layering - Modern naval combat relies heavily on network-centric warfare.
• The ECGNSS jammers act as soft-kill offensive and defensive measures, blinding anti-ship precision-guided munitions (PGMs) before they reach local airspace.
• Technology – Indigenously designed, developed, and manufactured; aligns with Aatmanirbhar Bharat and Make‑in‑India initiatives.
• The systems feature a minimum of 75% indigenous content, reinforcing the domestic defense manufacturing footprint.
• Maritime Security – Strengthens electronic warfare capabilities of Indian Navy ships.
• Broad Spectrum Denial - The jammers are engineered to degrade the signal acquisition and satellite tracking performance of all major foreign adversary GNSS architectures, including:
  • GPS (United States)
  • GLONASS (Russia)
  • BeiDou (China)
  • Galileo (European Union)

References

1. PIB | ECGNSS
2. TOI | ECGNSS