Which statement about Interference Rejection is accurate?

• A. It addresses weather clutter
• B. It addresses interference from other radars on the same frequency
• C. It improves range resolution
• D. It eliminates all false targets

Answer: (B)

Interference rejection is about filtering out signals that come from other radars operating on the same frequency so they don’t show up as targets on your display. When two radars share a frequency, their emissions can leak into the receiver and create confusing or false returns. Interference rejection uses processing techniques to identify and suppress those external signals, leaving genuine targets from your own radar.

That’s why the statement about interference from other radars on the same frequency is accurate. Weather clutter involves precipitation echoes and is handled by clutter suppression, not interference rejection. Range resolution depends on pulse width and transmitter bandwidth, not on interference rejection. And while interference rejection reduces some false targets caused by external radar interference, it doesn’t eliminate all false targets.