Ato 'a' School (Test 211)

Front 1

Define Electronic Warefare

Back 1

To deny enemy use of a electromagnetic system by limiting effective use due to destroying, degrading or otherwise rending them ineffective.

Front 2

Electronic Warfare:
The PRF factor determines what?

Back 2

The max range of radar.

Front 3

Electronic Warfare:
The Pulse width determines what?

Back 3

The minimum range of radar.

Front 4

Electronic Warfare:
The Beam width determines what?

Back 4

The Azimuth accuracy

Front 5

List the 3 targets of EA

Back 5

Communications, navigation and radar subsystems.

Front 6

What affects the speed of sound in seawater?

Back 6

Solidity, pressure and temperature.

Front 7

List and describe the 2 types of sonar equipment.

Back 7

Active: Also know as echo-ranging, generally used by surface and aircraft.

Passive: Also known as listening sonar equipment, does not transmit sound waves and is used by submarines.

Front 8

The airborne sonar system detects moving and stationary object within how many yards?

Back 8

20,000

Front 9

What is the purpose of an airborne sonar system?

Back 9

Provides range, bearing, speed and target configuration data.

Front 10

Using MAD what are the 4 ways to detect a submarine?

Back 10

Alignment in Earth's magnetic field

Submarine size

Latitude

Degree of permanent magnetization

Front 11

MAD equipment must be operated at what altitude?

Back 11

Low altitude

Front 12

How do you change the aircraft from air-air to air-ground?

Back 12

Master arm control panel

Front 13

List 3 modes that Fire Control operates as.

Back 13

Pulse

Pulse Doppler

Continuous Wave (CW)

Front 14

What WRA is a 2 back-back system that acts as a dual wave guide feedhorn?

Back 14

Duplexer

Front 15

What WRA delivers high power RF to the antenna?

Back 15

Waveguide Sytem

Front 16

Short pulse is used during which modes?

Back 16

H-map

L-map

Pulse

SEAM

Front 17

Chirp operation is used for?

Back 17

Long range target detection

Front 18

What system provides true heading to the radar?

Back 18

INS

Front 19

What is monopulse operation used for?

Back 19

Air-ground attack

Front 20

What WRA generates the doppler feed prior to launch?

Back 20

MASG

Front 21

The chirp IF signl is from
______ to ______ MHZ.

Back 21

28.5 - 38.5 MHZ

Front 22

What section in the MIMS do you find chirp operation?

Back 22

4-31

Front 23

In chirp operation:
300 600 1000 HZ

What are the miles of each?

Back 23

200 100 25/50

Front 24

What section in the MIMS do you find short pulse?

Back 24

4-25

Front 25

What produces a feedback mechanism for lasers?

Back 25

A pair of mirrors

Front 26

Interlocks can be overwritten?

Back 26

False, they should only be overwritten if called for by the MIM.

Front 27

All lasers are classified and labeled by the manufacturer?

Back 27

True

Front 28

A sidewinder missile contains what?

Back 28

An IR homing system.

Front 29

Economically what are the advantages of IR?

Back 29

Passive

Almost impossible to detect

Smaller, lighter and cheaper

High target resolution

Front 30

What is the frequency between visable light and the microwave region?

Back 30

3gig-400tera

Front 31

Define coherent light

Back 31

Same wavelength the whole way down.

Front 32

Which lasers require a danger label and protective eyewear?

Back 32

Class 3B (2.5 mwatts)

Hazardous when viewed directly or reflected.

Class 4
May be hazardous to skin, requires strict control including door interlocks.

Front 33

Which lasers require a caution label?

Back 33

Class 2 (less than 1 mwatts)

Class 3A
Won't hurt momentarily unless used with magnified optics.

Front 34

A portable IR detector can detect?

Back 34

Personal and vechicles

Front 35

A low laser can not do damage to the eye?

Back 35

False

Front 36

What is the 1st laser ever built?

Back 36

Ruby laser

Front 37

What is the accuracy of a laser?

Back 37

Within 1 foot a mile away

Front 38

Lasers are use for?

Back 38

Communication

Fiber Optics

Land Surveys

Front 39

Emissivity

Back 39

How much an object gives off radiation. A black body absorbs all.

Front 40

A liquid laser can go up to?

Back 40

10(8) watts peak

Front 41

What is the most critical component of an IR system?

Back 41

The detector

Front 42

What comes up when pilot is clear to land?

Back 42

Landing descreate illuminator light

Front 43

The radar acquisition window is how many miles behind the ship?

Back 43

4 miles

Front 44

List and describe the 3 modes of ACLS operation.

Back 44

Mode 1: Fully Automatic

Mode 2: Regular landing

Mode 3: Guidance by shipboard controller

Front 45

ACLS:
Final adjustment is when?

Back 45

1 1/2 seconds from touch down

Front 46

What does LASER stand for?

Back 46

Light
Amplification by
Stimulating
Emition of
Radiation

Front 47

IR is used in what 4 ways?

Back 47

Day photography because it is effective against camouflage targets.

Night photography because it provides a better visual over radar mapping.

Short range communication

Used in navigation

Front 48

When was the 1st IR system used and in what?

Back 48

In WWII in a Snooper Scope

Front 49

What is the frequency of FAR infrared range?

Back 49

5.6 microns - microwave

Front 50

What is the frequency of INTERMEDIATE infrared range.

Back 50

1.5 microns - 5.6 microns

Front 51

What is the frequency of NEAR infrared range?

Back 51

Visable light - 1.5 microns

Front 52

What does the Radar Digital Computer do?

Back 52

Preforms all computation required to control the Fire Control Radar subsystems.

Front 53

List the 5 basic sections of the Radar Digital Computer

Back 53

CONTROL

MEMORY

ARITHMETIC

INPUT

OUTPUT

Front 54

RADAR DIGITAL COMPUTER:
Describe 'Control'

Back 54

Provides timing and control by using data provides by the memory section.

Front 55

RADAR DIGITAL COMPUTER:
Describe 'Memory'

Back 55

Stores computer program
and Radar/Avionics data
require for computations.

Front 56

RADAR DIGITAL COMPUTER:
Describe 'Arithmitic'

Back 56

Preforms math and logic operations.

Front 57

RADAR DIGITAL COMPUTER:
Describe 'Input'

Back 57

Receives data from Radar/Avionics subsystems and coverts it into a format the computer understands.

Front 58

RADAR DIGITAL COMPUTER:
Describe 'Output'

Back 58

Converts data from the
Computer into a format that other Radar/Avionic subsystem
can understand.

Front 59

Fire Control Radar:
Pulse mode detects and tracks targets on a ______ basis.

Back 59

Range basis

Front 60

Fire Control Radar:
Pulse Doppler mode detects and tracks targets on a ______ basis.

Back 60

Velocity basis

Front 61

Antenna is a __ gymbol hydraulically driven
parabolic reflector.

Back 61

2

Front 62

What do the test circuits provide?

Back 62

BIT for radar and control

Front 63

Fire Control Radar:
How is range determined?

Back 63

By low frequency shift in target return.

Front 64

Fire Control Radar:
How is target data determined?

Back 64

By detecting doppler frequency.

Front 65

What is the AUX Horn used for?

Back 65

Tracking using angle deception jamming.

Front 66

What does the beam spoiler plate do?

Back 66

Changes the main lobe beam pattern during air to ground operation.