Key Topic 1: Marine RADAR Systems

Question 1

8-1A1: Choose the most current statement containing the parameters which control the size of the target echo.

A. Transmitted power, antenna effective area, transmit and receive losses, RADAR cross section of the target, range to target.

B. Height of antenna, power radiated, size of target, receiver gain, pulse width.

C. Power radiated, antenna gain, size of target, shape of target, pulse width, receiver gain.

D. Magnetron gain, antenna gain, size of target, range of target, wave-guide loss.

Answer 1

A. Transmitted power, antenna effective area, transmit and receive losses, RADAR cross section of the target, range to target.

Question 2

8-1A2: Which of the following has NO effect on the maximum range capability?

A. Carrier frequency.
B. Recovery time.
C. Pulse repetition frequency.
D. Receiver sensitivity.

Answer 2

B. Recovery time.

Question 3

8-1A3: What type of transmitter power is measured over a period of time?

A. Average.
B. Peak.
C. Reciprocal.
D. Return.

Answer 3

A. Average.

Question 4

3-1A4: What RADAR component controls timing throughout the system?

A. Power supply.
B. Indicator.
C. Synchronizer.
D. Receiver.

Answer 4

C. Synchronizer.

Question 5

3-1A5: Which of the following components allows the use of a single antenna for both transmitting and receiving?

A. Mixer.
B. Duplexer.
C. Synchronizer.
D. Modulator.

Answer 5

B. Duplexer.

Question 6

3-1A6: The sweep frequency of a RADAR indicator is determined by what parameter?

A. Carrier frequency.
B. Pulse width.
C. Duty cycle.
D. Pulse repetition frequency.

Answer 6

D. Pulse repetition frequency.