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EW Final > EW 2 > Flashcards

EW 2 Flashcards

1
Q

EW meaning.

A

The military exploitation of the EM spectrum.

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2
Q

3 EW subdivisions.

A

EA Electronic Attack
ES Electronic Support
ES Electronic Defence

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3
Q

EA Subdivisions.

A

Jamming (noise jamming and deception jamming)
Deception
Neutralisation

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4
Q

ES subdivisions.

A

Threat warning

SIGINT (COMMINT, ELINT)

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5
Q

ED subdivisions.

A

Active
Passive
EMCON
Electronic masking

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6
Q

Missile engagement process.

A 
Search
Acquire
Track
Launch
Intercept
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7
Q

Homing missile codes.

A

FOX1 Semi- external RADAR w/ 3rd party cueing.

FOX2 Passive- follows EM signatures.

FOX3 Active- internal RADAR transmitter and receiver.

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8
Q

RADAR meaning and fundamentals/elements.

A

RAdio Detection And Ranging

PW Pulse Width- Tgt discrimination.

PRF Pulse Repetition Frequency- data rate.

Frequency- data rate, range.

ARP Ariel Rotation Period- no of turns.

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9
Q

What is a RADAR mile?

A

Time taken for a RADAR pulse to travel one mile and return.

12.36us

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10
Q

3 types of RADAR displays.

A

A scope - range, signal strength.
B scope - range, relative bearing.
PPI Plan Position Indicator

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11
Q

MUR equation.

A

1/2C / PRF

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12
Q

PW equation.

A

C x time. (3x10^8) x (__x10^-6).

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13
Q

Types of information security.

A

Physical
Transmission security
Personnel Security
Cryptographic

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14
Q

MEZ

A

Missile Engagement Zone

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15
Q

TRESPASS call.

A

C/s
TRESPASS
Threat
Location

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16
Q

What is RADAR homing?

A

Using RADAR signals to position the A/C in order to ID a surface contact.

17
Q

DOA meaning and methods?

A

Direction of arrival

Phase comparison
Amplitude comparison

18
Q

ESM definition.

A

Intercept, locate and identify EM sources.

19
Q

What parts of the EM spectrum does the military utilise?

A

Radio
RADAR
EO/IR

20
Q

RADAR horizon equation.

A

1.23 x antenna height in ft.

21
Q

What is RADAR advantage?

A

When you can pick up a RADAR signal beyond their MUR.

22
Q

Missile guidance loop

A

Sensor
Error
Guidance computer
Steer

23
Q

Beam riding characteristics.

A

Covert
Not FnF
Susceptible to CM
Uses sensors to guide onto target using a unique PRF.

24
Q

Target range.

A

(C x return time) / 2

25
Q

Missile phases of guidance (flight)

A

Launch (boost)
Mid-course (sustain)
Terminal (coast)

26
Q

Factors affecting RCS.

A 
Shape 
Size 
Material
Lumps, bumps angles and cavities
Aspect
27
Q

MDR definition.

A

The receiver is inhibited when the RADAR is transmitting. This means returns within half the PW will be blanked.

28
Q

Types of CM

A 
Noise jamming
Frequency agility 
Deception jamming
Chaff
Towed RADAR decoys.
29
Q

Functional analysis.

A

3D search
Navigation
Air/surface search
Fire control

EW Final (1 decks)

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