Context:
The Middle East conflict has led to a 55% surge in electronic warfare incidents, with over 1,650 vessels affected by GPS jamming and spoofing near the Strait of Hormuz.
Key Highlights:
- What is GPS Jamming?
- A form of electronic warfare where devices emit high-power radio signals to disrupt satellite navigation.
- Targets GNSS systems such as GPS, GLONASS, NavIC.
- Working Mechanism
- Satellite signals are weak upon reaching Earth.
- Jammers broadcast signals on same frequency bands (L1, L2), creating signal noise and blocking navigation.
- Types of GNSS Interference
- Jamming (Denial of Service): Complete loss of signal.
- Spoofing (Deception): Fake signals mislead receivers about location.
- Electronic Interference (EMI)
- Disruption caused by unwanted electromagnetic fields.
- Operates through:
- Source (signal generator)
- Path (medium of transmission)
- Victim (affected device)
- Coupling Mechanisms of EMI
- Radiated: Through air (radio waves).
- Conducted: Through wires.
- Inductive: Magnetic field leakage.
- Capacitive: Electric field transfer.
- Types of Interference
- Narrowband vs Broadband
- Continuous vs Impulse (transient)
- Significance / Concerns
- Threatens maritime navigation and aviation safety.
- Impacts military operations and strategic infrastructure.
- Raises concerns for critical infrastructure security.
Relevant Prelims Points:
- GNSS (Global Navigation Satellite System):
- Includes GPS (USA), GLONASS (Russia), Galileo (EU), NavIC (India).
- NavIC:
- India’s regional navigation system developed by ISRO.
- GPS Frequency Bands:
- L1 (~1575 MHz), L2 (~1227 MHz).
- Spoofing vs Jamming:
- Spoofing = fake signals, Jamming = signal blocking.
- Electromagnetic Spectrum:
- Range of frequencies used in communication and navigation systems.
Relevant Mains Points:
- Electronic Warfare in Modern Conflicts
- Increasing reliance on cyber and electronic domains.
- Non-kinetic warfare methods disrupting enemy capabilities.
- Strategic Importance
- Affects global trade routes (e.g., Strait of Hormuz).
- Impacts defence, aviation, shipping, and disaster management systems.
- Challenges
- Difficulty in detecting and attributing spoofing attacks.
- Vulnerability of civilian infrastructure.
- India’s Concerns
- Need to safeguard NavIC and critical systems.
- Importance for defence preparedness and maritime security.
- Way Forward
- Develop anti-jamming and anti-spoofing technologies.
- Strengthen redundant navigation systems.
- Enhance international cooperation on electronic warfare norms.
- Invest in indigenous navigation and cyber defence capabilities.
UPSC Relevance:
• GS Paper III – Science & Technology, Internal Security
• GS Paper II – International Relations (strategic chokepoints)