Radar Plotting

Question 1

Define radar plotting.

Answer 1

The process of determining the position and movement of targets using radar data.

Question 2

True or false: Relative motion is used in radar plotting.

Answer 2

TRUE

Relative motion helps in understanding the movement of targets compared to the observer.

Question 3

Fill in the blank: CPA stands for _______.

Answer 3

Closest Point of Approach

Question 4

What does ARPA stand for?

Answer 4

Automatic Radar Plotting Aid

Question 5

Define vector in radar plotting.

Answer 5

A representation of a target’s course and speed on a radar display.

Question 6

True or false: True motion considers the movement of the observer.

Answer 6

FALSE

True motion focuses on the actual movement of targets without considering the observer’s movement.

Question 7

What is the purpose of range rings?

Answer 7

To indicate distances from the radar source on a radar display.

Question 8

Fill in the blank: Bearing is the angle measured from _______.

Answer 8

True North

Question 9

What is a target track?

Answer 9

The continuous monitoring of a target’s position over time.

Question 10

True or false: Radar shadow occurs when an object blocks radar signals.

Answer 10

TRUE

Radar shadows can lead to blind spots in radar detection.

Question 11

Define echo in radar terms.

Answer 11

The reflected radar signal from a target back to the radar source.

Question 12

What does SOG stand for?

Answer 12

Speed Over Ground

Question 13

Fill in the blank: COG stands for _______.

Answer 13

Course Over Ground

Question 14

What is the function of guard zones?

Answer 14

To alert the operator of potential collisions with nearby targets.

Question 15

True or false: Radar range is limited to 10 nautical miles.

Answer 15

FALSE

Radar range can vary widely depending on the system used.

Question 16

Define collision risk assessment.

Answer 16

Evaluating the likelihood of a collision based on target movement and CPA.

Question 17

What is the significance of target acquisition?

Answer 17

Identifying and tracking a target on the radar display.

Question 18

Fill in the blank: Tactical plotting involves _______.

Answer 18

Real-time decision-making based on radar data.

Question 19

What is a radar display?

Answer 19

A visual representation of radar data showing targets and their movements.

Question 20

True or false: Echoes can be affected by weather conditions.

Answer 20

TRUE

Rain, fog, and other conditions can distort radar signals.

Question 21

Define target resolution.

Answer 21

The ability to distinguish between two or more close targets on radar.

Question 22

What is the purpose of plotting sheets?

Answer 22

To manually record radar data for analysis and decision-making.

Question 23

Fill in the blank: Dead reckoning involves estimating position based on _______.

Answer 23

Course and speed

Question 24

What does AIS stand for?

Answer 24

Automatic Identification System

Question 25

True or false: **Radar** can detect targets beyond the horizon.

Answer 25

TRUE ## Footnote Radar can detect targets at a distance due to its wave propagation.

Question 26

Define **echo sounder**.

Answer 26

A device that uses sonar to measure water depth and detect underwater objects.

Question 27

What is the function of **tracking algorithms**?

Answer 27

To predict the future position of targets based on their current movement.