Radar Navigation Quiz

Which radar control adjusts the sensitivity for weak echoes?

• Rain clutter for noise filter

• Gain control for sensitivity

• Tune adjustment for clarity

• Sea clutter for clear signal

Which radar control affects moving target clarity over time?

• Echo trails for clarity

• VRM for distance range

• Display contrast setting

• Gain for sensitivity

When a radar detects a SART, what pattern would appear on the radar screen?

• A blanket of return signals

• Short repetitive dots leading to the SART’s location

• Continuous speckled lines

• Random scattered blips

When navigating in congested waters, how can radar be used to monitor multiple targets simultaneously?

• By using ARPA to track and display movement of vessels

• By increasing the radar’s pulse length for better clarity

• By adjusting gain control to reduce interference

• By switching to true motion mode for better detection

When navigating near a coastline with tall structures, how can the radar operator avoid false echoes?

• Switch to long pulse length for better range

• Adjust VRM to measure the distance from the objects

• Adjust gain to filter reflections from large object

• Use rain clutter control to reduce noise from rain

Which radar term refers to the ability to distinguish distances?

• Doppler effect adjustment

• Clutter suppression mode

• Bearing accuracy setting

• Range resolution ability

A radar operator needs to detect distant objects in calm weather. What should they adjust for the best performance?

• Switch to sea clutter control to reduce interference

• Use short pulses for better range resolution

• Adjust gain control to reduce clutter

• Increase the radar’s pulse length for longer range

What is the term for unwanted radar echoes caused by waves?

• Rain clutter from storms

• Sea clutter from waves

• Ground clutter from echoes

• Signal clutter from noise

If two objects appear close together on the radar display, how can the operator distinguish them?

• Adjust VRM to measure the distance between them

• Increase gain control to amplify both objects' signals

• Switch to longer pulse lengths for better range

• Use short pulse to separate closely spaced objects

In congested waters, what should a radar operator use to predict the risk of a collision with another vessel?

• Sea clutter control to reduce interference

• Pulse length to enhance resolution

• Doppler effect to detect speed

• Relative motion and ARPA