LP 7 Fundamentals Of Radar

Question 1

A radio detection device which provides information on range, azimuth, and or elevation of objects

Answer 1

Radar

Question 2

What are the two types of radar systems

Answer 2

Primary radar, secondary radar

Question 3

A radar system in which a minute portion of a radio pulse transmitted from a site is reflected by an object and then received back at the site for processing and display at an air traffic control facility

Answer 3

Primary radar

Question 4

What radar system sends out a signal which is reflected by anything with mass ( echo principle)

Answer 4

Primary radar

Question 5

What radar signal is a pulse of radio energy similar to an x-ray

Answer 5

Primary radar

Question 6

Does primary radar require equipment in the aircraft?

Answer 6

No

Question 7

What are the four major components of a primary radar system?

Answer 7

Transmitter, antenna, receiver, radar display.TARR

Question 8

The area directly above the antenna is called what and is not included in the signal pattern

Answer 8

Blind zone

Question 9

What features improve primary radar presentation

Answer 9

Movie target indicator (MTI)

polarization

Question 10

And electronic device which will permit radar scope presentation only from targets which are in motion

Answer 10

Moving target indicator

MTI

Question 11

Is a pattern produced on the radar scope by ground returns which may degrade other radar returns in affected area

Answer 11

Ground clutter GC

Question 12

What generates a pulse of radio energy

Answer 12

The transmitter

Question 13

What focuses and broadcast radio energy, then collects the reflected return

Answer 13

The antenna

Question 14

What amplifies and converts the reflected energy into video

Answer 14

The receiver

Question 15

What depicts the position and movement of objects that reflect radio energy

Answer 15

The radar display

Question 16

What happens when an aircraft is moving directly toward or away from the radar antenna at a particular speed
MTI

Answer 16

Blind speed

Question 17

What is the radar antenna configuration that determines the motion of the Radio energy as it is transmitted

Answer 17

Polarization

Question 18

What are the two types of polarization

Answer 18

Linear, circular

Question 19

The normal radar transmission that will cause an echo from anything that has mass

Answer 19

Linear polarization LP

Question 20

An electromagnetic wave for which the electronic and or the magnetic field vector at a point describes a circle

Answer 20

Circular polarization CP

Question 21

It reduces or eliminates echoes from precipitation

Answer 21

CP

Question 22

Name the components of a primary radar system

Answer 22

Transmitter, antenna, receiver, radar display

Tarr

Question 23

What are the most Prevailant phenomena which can adversely affect the presentation that a controller sees on a primary radar display

Answer 23

Anomalous propagation AP, 
temperature inversion, 
False targets, 
electronic radar interference, 
radar jamming, 
target fades

Question 24

Anomalous propagation is caused by

Answer 24

Density or moisture

Question 25

Radar beams are bent in the direction of

Answer 25

Dry dense air

Question 26

What occurs when warmer air is trapped on top of cooler air?

Answer 26

Temperature inversion

Question 27

Targets that lack validity or authenticity often produced as a result of temperature inversion or anomalous propagation

Answer 27

False targets

Question 28

What are the two causes of electronic radar interference

Answer 28

``` Cross channeling (same system), other radar systems operating on the same frequency ```

Question 29

The disruption of the radar display on radio reception by means of electronic or mechanical interference

Answer 29

Jamming

Question 30

What are the two types of radar Jamming

Answer 30

Passive and active jamming

Question 31

Appearance of clutter on the radar display achieve by dropping large amounts of shredded foil, chaff

Answer 31

Passive radar jamming

Question 32

Electronically disrupting the radar operating frequency which results in clutter pattern similar to radar interference

Answer 32

Active radar jamming

Question 33

Inherent feature of all radar systems

Answer 33

Target fades

Question 34

What type of polarization would be used to reduce areas of heavy precipitation from the radar display

Answer 34

Circular polarization

Question 35

Displays only objects in motion

Answer 35

MTI

Question 36

Requires no equipment in the aircraft

Answer 36

Primary radar

Question 37

Focuses, broadcast, and collects reflected radio energy

Answer 37

Antenna

Question 38

Depicts the position and movement of objects that reflect radio energy

Answer 38

Radar display

Question 39

Reduces or eliminates echoes from precipitation

Answer 39

Cp

Question 40

Normal radar transmission that will cause an echo from anything that has mass

Answer 40

Lp

Question 41

Radar indications of aircraft or objects that do not exist

Answer 41

False target

Question 42

Appearance of clutter on the radar display caused by moisture in the air bending the radar beem

Answer 42

Ap

Question 43

Occurs when warmer air is trapped on top of cooler air

Answer 43

Temperature inversion

Question 44

Appearance of clutter on the radar display that results from two radar systems operating on the similar frequency

Answer 44

Electronic radar interference

Question 45

Appearance of clutter on the radar display caused by dropping large amounts of chaff

Answer 45

Passive jamming

Question 46

Clutter pattern achieved by electronic disruption of the radar operating frequency

Answer 46

Active jamming

Question 47

Area directly above the antenna that is not included in the signal pattern

Answer 47

Blind zone

Question 48

Amplifies and converts reflected radio energy into video

Answer 48

Receiver

Question 49

ATCTBS

Answer 49

Air traffic control radar beacon system

Question 50

Name the components of a secondary radar system

Answer 50

``` Interrogator antenna transponder decoder radar display ``` Triad

Question 51

Ground based transmitter that generates radio signal which are sent to the antenna for broadcast

Answer 51

Interrogator

Question 52

Broadcast radio signals covering the same azimuth as primary antenna

Answer 52

Secondary radar antenna

Question 53

Is located in the aircraft

Answer 53

Transponder

Question 54

Processes transponder replies and send them to the radar display

Answer 54

Decoder

Question 55

Depicts an electronic presentation of a radar derived information

Answer 55

Radar display

Question 56

What may cause false targets to appear on a secondary radar display

Answer 56

Transponder operating near obstruction | Ring around

Question 57

The transponder replies excessively resulting in an arc or circle of replies centered on the radar sight

Answer 57

Ring around

Question 58

Name three advantages of secondary radar

Answer 58

Less vulnerable to blind spots, provides a longer range then primary, responses are not degraded by weather or ground clutter

Question 59

Name three disadvantages of secondary radar

Answer 59

It only displays aircraft with transponders, does not provide weather information, return is affected by the aircraft orientation along it's longitudinal axis

Question 60

What radar system has to have equipment to be picked up and which one doesn't

Answer 60

Primary doesn't have to have equipment, secondary has to have a transponder

Question 61

Electronically displayed map on the radar display that may depict data such as airports, heliports, runway…

Answer 61

Video map

Question 62

The study circular motion of an electronic been depicted on the radar display that updates target information and correlates with the rotation of the radar antenna

Answer 62

Radar sweep