DRFM-based deception involves what?

• A. Storing RF signatures digitally and replaying them to mislead receivers
• B. Purely passive shielding of sensors
• C. Saturating receivers with wideband noise
• D. Real-time frequency hopping without memory

Answer: (A)

DRFM-based deception relies on capturing the radar’s return, storing it digitally, and then replaying modified versions to fool the radar. The Digital RF Memory lets the EW system hold RF signatures in memory and precisely adjust how each echo is replayed—tuning amplitude, phase, frequency, and timing so the radar perceives believable false targets or altered range and velocity. This approach is about creating convincing, controllable echoes rather than just blocking detection or flooding the receiver. Passive shielding doesn’t fabricate echoes; noise jamming overwhelms receivers with unwanted energy; and real-time frequency hopping without memory lacks the stored, manipulated echoes needed to deceive the radar.