CMRT Radar Performance Testing & Monitoring

Question 1

What is the primary purpose of a performance monitor in a marine radar system?

Accepted Answer

To evaluate the overall sensitivity and transmitter power of the radar

Answer

A radar performance monitor evaluates overall system sensitivity and transmitter power, giving the operator a continuous measure of the radar's operational condition.

Question 2

What primarily determines the minimum range of a marine radar?

Accepted Answer

Pulse width and receiver recovery time

Answer

Minimum range is determined by the pulse width (duration of the transmitted burst) and the receiver recovery time needed after transmission ends before echoes can be detected.

Question 3

A peak power meter is used during radar maintenance to measure which parameter?

Accepted Answer

Magnetron pulse peak power output

Answer

A peak power meter measures the instantaneous peak power of the magnetron's transmitted pulses, which is critical for assessing transmitter health and compliance with performance standards.

Question 4

What term describes the minimum signal level a radar receiver can detect above the noise floor?

Accepted Answer

Minimum discernible signal (MDS)

Answer

Minimum discernible signal (MDS) is the lowest signal level detectable by the receiver above background noise, directly indicating receiver sensitivity.

Question 5

Which of the following best describes radar range resolution?

Accepted Answer

The ability to distinguish two targets at nearly the same range as separate echoes

Answer

Range resolution is the radar's ability to display two targets at nearly the same range as separate echoes, and is primarily determined by the transmitted pulse width.

(CMRT) Certified Marine Radar Technician Practice Test

(CMRT) Certified Marine Radar Technician Practice Test

CMRT Radar Performance Testing & Monitoring