WorksheetsRadar Control and Function Quiz
Total questions: 20
Worksheet time: 10mins
What radar control adjusts sensitivity to detect weak targets?
Reduces bearing resolution
Displays radar orientation
Adjusts radar receiver gain
Measures horizontal accuracy
Which control sets how far the radar can display targets?
VRM calibration setting
Radar range selection
Heading flash adjuster
Receiver bandwidth mod
What does the VRM on a radar screen measure?
Target bearing only
Relative motion rate
Distance from own ship
Antenna rotation time
What is used to display the ship’s heading?
Echo plotting tool
Heading line marker
Shadow sector tool
Expansion range tool
What function helps reduce wave interference?
Image refresh feature
Gain reduction knob
Sea clutter suppressor
Aspect ratio corrector
Which radar control alters target color visibility?
Motion direction tool
Heading synchronization
Brightness adjustment
Noise sweep trigger
What function allows magnifying radar display?
Expansion view mode
Relative speed tool
North-up alignment
CPA range adjuster
What does EBL measure on a radar screen?
Course and speed only
Closest approach time
Bearing to a target
Peak echo intensity
Which control activates radar without transmitting?
Standby transmission
Relative heading view
Course-up orientation
Heading flash option
What adjusts the radar receiver’s frequency precisely?
Gain synchronization
EBL frequency adjust
Tuning knob control
Echo peak positioner
What effect does fog typically have on radar signals?
Reflects signals forward only
Amplifies the radar return
Scatters and reduces accuracy
Enhances surface resolution
Why are large metal targets easier to detect by radar?
Absorb signal energy well
Create scattered returns
Have high reflectivity rate
Reduce Doppler tracking
What is the role of Moving Target Indication (MTI)?
Filters color saturation
Enhances Doppler shifts
Suppresses moving echoes
Reduces unwanted clutter
Why is rain clutter problematic on radar screens?
Fades target intensity
Mimics radar beacons
Masks vital targets
Increases display delay
What happens when radar signals hit snow?
Signals become clearer
All targets disappear
Echoes become unreadable
Signals get attenuated
If clutter masks small boats near the coast, what control should be used?
Doppler signal tracking
MTI clutter reduction
Manual bearing tuning
Off-centering display
Which action helps minimize radar blind sectors?
Use multipath filters
Raise the signal gain
Install second antenna
Set heading to North
When encountering Doppler shifts from targets, what is being detected?
Target orientation only
Interference from jamming
Movement of the targets
Shape of radar echoes
If sea return dominates the screen near the bow, how do you respond?
Zoom to full scale mode
Decrease range rings
Apply sea clutter filter
Reboot radar system
When strong echoes from racons obscure nearby vessels, what helps?
Reduce VRM intensity
Enable beacon ignore
Activate EBL masking
Adjust display filters
