ARPA || with Complete Solution.
Your ARPA has been tracking a target for 3 min. the radar did not receive an echo from the target
for 2 successive scans. What will happen? correct answers The ARPA will continue to track as if
the RADAR was still receiving a target echo. The tracking gate will become larger.
As confidence in a target predicted movement increases: correct answers The tracking gate size
decreases.
An input error from your Doppler speed log: correct answers is the most common APRA error
not involving display interpretation
you notice the history dots on a tracked target getting farther apart. This may indicate that:
correct answers the target has increased speed
in trail maneuver mode, the effect of the proposed maneuver is displayed: correct answers with
the use of relative vectors
ARPA can preform tracking functions on AIS without radar information. (T/F) correct answers
True
Locating a contact by the range and bearing can best be described as using: correct answers the
polar coordinate system.
How can vessel personnel detect the operation of a SART in its vicinity? correct answers A
unique signal consisting of a blip code radiating outward from a SART's position along its line
bearing
What is the purpose or function of the "Trial Mode" used in most ARPA equipment? correct
answers it is used to allow results of proposed maneuvers to be assessed.
, The process the controls the tracking gate: correct answers rate aiding or smoothing
11) What does the acronym ARPA stand for? correct answers Automatic radar plotting aid
Benefit of a small tracking gate is: correct answers Less likely to experience target swop due to
clutter and other targets passing close by or into the gate.
Parallel index lines: correct answers require gyro stabilization
The benefit of true vector use is: correct answers All are correct statements.
When using ARPA fitted radars in heavy rain, what action should you take? correct answers all
are correct answers
relative target motion relies on: correct answers target persistence and strength
target swap may occur when two targets: correct answers pass close together
Changing from short to longer range scales may result in a lost contact alarm (T/F) correct
answers False
identify the correct manual plot vector label that best represents an ARPA true vector. correct
answers e-m
the term acquire and designate mean the same thing. (T/F) correct answers False
Target swap: correct answers can ruin an auto drift plot
Your ARPA has been tracking a target for 3 min. the radar did not receive an echo from the target
for 2 successive scans. What will happen? correct answers The ARPA will continue to track as if
the RADAR was still receiving a target echo. The tracking gate will become larger.
As confidence in a target predicted movement increases: correct answers The tracking gate size
decreases.
An input error from your Doppler speed log: correct answers is the most common APRA error
not involving display interpretation
you notice the history dots on a tracked target getting farther apart. This may indicate that:
correct answers the target has increased speed
in trail maneuver mode, the effect of the proposed maneuver is displayed: correct answers with
the use of relative vectors
ARPA can preform tracking functions on AIS without radar information. (T/F) correct answers
True
Locating a contact by the range and bearing can best be described as using: correct answers the
polar coordinate system.
How can vessel personnel detect the operation of a SART in its vicinity? correct answers A
unique signal consisting of a blip code radiating outward from a SART's position along its line
bearing
What is the purpose or function of the "Trial Mode" used in most ARPA equipment? correct
answers it is used to allow results of proposed maneuvers to be assessed.
, The process the controls the tracking gate: correct answers rate aiding or smoothing
11) What does the acronym ARPA stand for? correct answers Automatic radar plotting aid
Benefit of a small tracking gate is: correct answers Less likely to experience target swop due to
clutter and other targets passing close by or into the gate.
Parallel index lines: correct answers require gyro stabilization
The benefit of true vector use is: correct answers All are correct statements.
When using ARPA fitted radars in heavy rain, what action should you take? correct answers all
are correct answers
relative target motion relies on: correct answers target persistence and strength
target swap may occur when two targets: correct answers pass close together
Changing from short to longer range scales may result in a lost contact alarm (T/F) correct
answers False
identify the correct manual plot vector label that best represents an ARPA true vector. correct
answers e-m
the term acquire and designate mean the same thing. (T/F) correct answers False
Target swap: correct answers can ruin an auto drift plot
