What is the purpose of squelch thresholds on radar video?

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Multiple Choice

What is the purpose of squelch thresholds on radar video?

Squelch on radar video acts as an amplitude gate. It defines the minimum signal level that will be displayed; any return weaker than that threshold is suppressed. By doing this, weak noise and tiny fluctuations don’t show up on the screen, which reduces clutter and helps real targets stand out. It doesn’t adjust range or specifically filter weather echoes—the latter are handled by other processing modes, though a weak weather return may be suppressed if it doesn’t exceed the threshold.

Squelch on radar video acts as an amplitude gate. It defines the minimum signal level that will be displayed; any return weaker than that threshold is suppressed. By doing this, weak noise and tiny fluctuations don’t show up on the screen, which reduces clutter and helps real targets stand out. It doesn’t adjust range or specifically filter weather echoes—the latter are handled by other processing modes, though a weak weather return may be suppressed if it doesn’t exceed the threshold.

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