Q3. The term GPS Spoofing, sometimes mentioned in the context of modern electronic warfare, refers to:
Answer: B [Transmission of fake navigation signals to mislead GPS receivers]
Explanation: Option (a) is incorrect: Blocking satellite navigation signals using strong radio frequency interference describes GPS jamming, not spoofing. In jamming, the genuine GNSS signal is overwhelmed by noise so the receiver cannot detect it, whereas spoofing manipulates the signal to provide false navigation information.
Option (b) is correct: GPS Spoofing is a cyber-electronic attack in which counterfeit GPS signals are transmitted to deceive navigation receivers. The receiver interprets the fake signals as legitimate, causing it to calculate incorrect position or timing data, potentially misdirecting ships, aircraft, drones, or military systems.
Option (c) is incorrect: Physical destruction of satellites refers to anti-satellite (ASAT) weapons or kinetic attacks in space. GPS spoofing is not a physical attack on satellites but an electronic manipulation of navigation signals received on Earth.
Option (d) is incorrect: Encryption of navigation signals is a protective security measure used in certain military navigation systems to prevent unauthorized access. GPS spoofing is the opposite—it involves deceptive signal transmission intended to trick navigation receivers.