Interference Rejection addresses interference from what?

• A. Interference from weather
• B. Interference from other radars on the same frequency
• C. Self-noise
• D. Target maneuvers

Answer: (B)

Interference Rejection is about filtering out signals that come from other radars operating on the same frequency. When multiple radars share a channel, their pulses can enter your receiver and appear as false echoes or garbled data. The rejection technique detects patterns that don’t match real targets—based on how the pulses arrive and move—and suppresses those signals so you can see legitimate targets clearly. Weather echoes, self-noise, or target maneuvers aren’t what this feature is aimed at: weather clutter comes from precipitation, self-noise is the receiver’s own internal noise, and maneuvers affect target tracking rather than being external interference. So the best description is interference from other radars on the same frequency.