CMRT CMRT Target Tracking & ARPA

Question 1

What does ARPA stand for in the context of marine radar systems?

Accepted Answer

Automatic Radar Plotting Aid

Answer

Advanced Radar Processing Algorithm

Answer

Automated Range and Position Analyzer

Answer

Analog Radar Processing Array

Question 2

Which parameter does ARPA calculate to determine collision risk with a tracked target?

Accepted Answer

Closest Point of Approach (CPA)

Answer

Maximum Range of Acquisition (MRA)

Answer

Bearing Resolution Index (BRI)

Answer

Pulse Repetition Frequency (PRF)

Question 3

What is the minimum number of targets an ARPA system complying with IMO Resolution MSC.192(79) must be capable of tracking simultaneously?

Accepted Answer

100

Answer

20

Answer

50

Answer

10

Question 4

In ARPA terminology, what is 'target swap'?

Accepted Answer

A tracking error where the system exchanges the identity of two nearby targets

Answer

A manual reassignment of a target to a different tracking channel

Answer

A deliberate override of automatic acquisition

Answer

A calibration procedure for the tracking algorithm

Question 5

What is the purpose of the 'guard zone' feature in an ARPA/radar system?

Accepted Answer

To automatically alarm when a target enters a defined range or sector

Answer

To block radar emissions in a specified direction

Answer

To filter out sea clutter within a set distance

Answer

To limit the radar's detection range for power saving

Question 6

Which ARPA display mode presents all tracked target vectors relative to the water rather than the ground?

Accepted Answer

True Motion – Sea Stabilized

Answer

Relative Motion – North Up

Answer

True Motion – Ground Stabilized

Answer

Head-Up Unstabilized