Day 1: EA

Question 1

A disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source

Answer 1

Electromagnetic Interference (EMI)

Question 2

Involves the use of the electromagnetic spectrum (EM spectrum) to attack enemy target systems

Answer 2

Electromagnetic Attack (EA)

Question 3

Examples of EA

Answer 3

• Jamming communication signals or radar systems
• Spoofing

Question 4

False information is fed to the enemy’s systems

Answer 4

Spoofing

Question 5

Phenomenon that occurs when two or more waves combine to form a resultant wave

Answer 5

Interference

Question 6

Enhance the strength of a signal

Answer 6

Constructive Interference (in phase)

Question 7

Can also increase the strength of friendly signals

Answer 7

Constructive Interference (in phase)

Question 8

Reduce the fidelity of enemy signals

Answer 8

Destructive Interference (out of phase)

Question 9

Support offensive military operations

Answer 9

Offensive EA

Question 10

Protect friendly forces from adversary attacks

Answer 10

Defensive EA

Question 11

Aim is to disrupt or deny the usage of a communication link or a detection system

Answer 11

Jamming

Question 12

What are the two categories of jamming?

Answer 12

• Active
• Passive

Question 13

Emitting signals to interfere with a target’s operation

Answer 13

Active Jamming

Question 14

Techniques such as chaff or decoys to confuse the enemy’s systems

Answer 14

Passive Jamming

Question 15

False information is introduced into the enemy’s systems, causing them to react to an incorrect situation

Answer 15

Spoofing

Question 16

Different from jamming in that it doesn’t just deny the use of a system, but actively misleads it

Answer 16

Spoofing

Question 17

Applications of Spoofing

Answer 17

• Creating false targets
• Sending incorrect location data
• Injecting false information into enemy communication networks

Question 18

Factors in EA

Answer 18

• Power
• Frequency
• Modulation
• Target System Characteristics

Question 19

Military EA

Answer 19

• Communication Jamming
• Radar Jamming and Spoofing
• Navigation Interference
• Information Warfare

Question 20

What kind of interference can be used to boost the strength of a signal?

Answer 20

Constructive

Question 21

What kind of interference can be used to weaken or completely nullify a signal?

Answer 21

Destructive

Question 22

As a jammer, you want to ____ a target signal’s Eb/No in order to disrupt/deny.

Answer 22

Lower

Question 23

A higher BER means what?

Answer 23

That the desired signal is highly distorted because of bit errors

Question 24

As a jammer, you want to ____ a target signal’s BER in order to disrupt/deny.

Answer 24

Raise

Question 25

What are the types of systems used for EA?

Answer 25

• Dedicated Jamming Systems
• Integrated Self-Protection Systems
• Stand-Off Jamming Systems

Question 26

Identify

Disrupt enemy radar and communication systems from a distance

Answer 26

Stand-Off Jamming Systems

Question 27

Identify

Use high-power jammers to protect their signals over long distances, and they may be capable of jamming multiple frequencies at once to disrupt a wide range of enemy systems

Answer 27

Stand-Off Jamming Systems

Question 28

What are they key RF components required for EA?

Answer 28

• Control System
• Antenna
• Power Amplifier
• Power Supply
• Signal Generator