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

To measure antenna rotation speed

Answer

To display target tracking data

Answer

To control the automatic gain of the receiver

Question 2

What primarily determines the minimum range of a marine radar?

Accepted Answer

Pulse width and receiver recovery time

Answer

Transmitter peak power output

Answer

Antenna gain and beamwidth

Answer

Pulse repetition frequency

Question 3

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

Accepted Answer

Magnetron pulse peak power output

Answer

Antenna rotation speed

Answer

Receiver noise figure

Answer

Display brightness and contrast

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

Pulse repetition interval

Answer

Intermediate frequency bandwidth

Answer

Dynamic range

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

The ability to determine the bearing of two closely spaced targets

Answer

The maximum detection range of the radar system

Answer

The minimum radar cross-section detectable by the system

Question 6

What effect does increasing the pulse repetition frequency (PRF) have on a marine radar?

Accepted Answer

It reduces the maximum unambiguous range

Answer

It increases maximum unambiguous detection range

Answer

It improves range resolution significantly

Answer

It increases antenna gain

Question 7

What is the typical duty cycle of a marine radar transmitter?

Accepted Answer

0.1 to 2 percent

Answer

50 to 60 percent

Answer

25 to 30 percent

Answer

10 to 15 percent