Worksheetsquiz 2 10200 Nav 5
Total questions: 20
Worksheet time: 10mins
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
RACONs appear on the radar display as a series of radial lines, and they are used as navigational aids to provide identification and position information to ships' radars.
True
False
For a marine radar system, a larger antenna size generally leads to less accurate measurements, as the increased surface area tends to scatter the radar waves more broadly.
True
False
The skill of the operator in interpreting the radar display does impact the perceived accuracy of bearing information, as the resolution of the display and the operator's interpretation skills are crucial for accurate target positioning.
True
False
1. What adjusts the radar receiver’s frequency precisely?
A. Gain synchronization
B. EBL frequency adjust
C. Tuning knob control
D. Echo peak positioner
1. Which control activates radar without transmitting?
A. Standby transmission
B. Relative heading view
C. Course-up orientation
D. Heading flash option
1. What does EBL measure on a radar screen?
A. Course and speed only
B. Closest approach time
C. Bearing to a target
D. Peak echo intensity
1. What function allows magnifying radar display?
A. Expansion view mode
B. Relative speed tool
C. North-up alignment
D. CPA range adjuster
1. Which radar control alters target color visibility?
A. Motion direction tool
B. Heading synchronization
C. Brightness adjustment
D. Noise sweep trigger
1. What is used to display the ship’s heading?
A. Echo plotting tool
B. Heading line marker
C. Shadow sector tool
D. Expansion range tool
1. What radar control adjusts sensitivity to detect weak targets?
A. Reduces bearing resolution
B. Displays radar orientation
C. Adjusts radar receiver gain
D. Measures horizontal accuracy
