ARPA Final Exam | Latest 2025/ 2026 Update
| Questions and Answers | GRADED A
(Verified Elaborations)
…….
Question:
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?
Answer:
The ARPA will continue to track as if the RADAR was still receiving a target echo. The tracking
gate will become larger.
Question:
As confidence in a target predicted movement increases:
Answer:
The tracking gate size decreases.
Question:
An input error from your Doppler speed log:
Answer:
is the most common APRA error not involving display interpretation
, Question:
you notice the history dots on a tracked target getting farther apart. This may indicate that:
Answer:
the target has increased speed
Question:
in trail maneuver mode, the effect of the proposed maneuver is displayed:
Answer:
with the use of relative vectors
Question:
ARPA can preform tracking functions on AIS without radar information. (T/F)
Answer:
True
Question:
Locating a contact by the range and bearing can best be described as using:
Answer:
the polar coordinate system.
Question:
| Questions and Answers | GRADED A
(Verified Elaborations)
…….
Question:
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?
Answer:
The ARPA will continue to track as if the RADAR was still receiving a target echo. The tracking
gate will become larger.
Question:
As confidence in a target predicted movement increases:
Answer:
The tracking gate size decreases.
Question:
An input error from your Doppler speed log:
Answer:
is the most common APRA error not involving display interpretation
, Question:
you notice the history dots on a tracked target getting farther apart. This may indicate that:
Answer:
the target has increased speed
Question:
in trail maneuver mode, the effect of the proposed maneuver is displayed:
Answer:
with the use of relative vectors
Question:
ARPA can preform tracking functions on AIS without radar information. (T/F)
Answer:
True
Question:
Locating a contact by the range and bearing can best be described as using:
Answer:
the polar coordinate system.
Question:
