EW and Radar

Question 1

Components of a Pulsed Radar Transmitter. (3)

Answer 1

Master Time Generator
Modulator
Oscillator

Question 2

Components of a Pulsed Radar Display. (2)

Answer 2

Display

Timebase Generator

Question 3

Components of a Pulsed Radar System. (6)

Answer 3

Transmitter
Tx/Rx Switch
Aerial
Amp
Superheterodyne Receiver
Display

Question 4

What is Electronic Warfare? (1)

Answer 4

Any military action that involves the use of the EM Spectrum

Question 5

What are the components of EW? (3)

Answer 5

Electronic Attack
Electronic Support
Electronic Protection

Question 6

What are the components of EA? (3)

Answer 6

Jamming
Deception
Neutralisation

Question 7

What are the components of EP? (4)

Answer 7

EMCON
Masking
Hardening
WaRMs

Question 8

What are the components of ES? (2)

Answer 8

Threat Warning

SIGINT

Question 9

What is Electronic Attack? (1)

Answer 9

Use of the EM Spectrum to degrade, deny, disrupt or destroy enemy capability

Question 10

What is Electronic Protection? (1)

Answer 10

All actions taken to protect friendly personnel from the effects of enemy and friendly use of EM

Question 11

Types of RWR. (2)

Answer 11

Digital Crystal Video Rx

Wide Band Scanning Super Heterodynes

Question 12

Characteristics of a DCVR. (3)

Answer 12

Wide bandwidth
Relatively low sensitivity
New systems have IFM with MDD

Question 13

Pros and Cons of a DCVR. (4)

Answer 13

+ves

Wide open receiver gives good probability of detection
Radars do not have to be in the MDD to be intercepted

-ves

Lower sensitivity than SHR
Some can only give RF by band which can result in ambiguities

Question 14

Characteristics of an SHR. (3)

Answer 14

Narrow bandwidth
High sensitivity
All have IFM

Question 15

RWR Components. (5)

Answer 15

Antennae
Processor and power supply
Control Panel
Audio output
Display output

Question 16

Types of MWS. (3)

Answer 16

Radar MWS
IR MWS
UV MWS

Question 17

3 stage process of an MWS. (3)

Answer 17

Detect
Track
Declare

Question 18

What does an MWS detect? (3)

Answer 18

Muzzle flash
Relative velocity
Motor ignition

Question 19

MWS requirements. (5)

Answer 19

Spherical coverage
LREW
Speed
Low false alarm rate
High probability of detection

Question 20

3 stage process of a missile. (3)

Answer 20

Boost
Sustain
Coast

Question 21

Characteristics of a Radar MWS. (4)

Answer 21

Detects an object due to its mass/RCS
Detects targets PD shift
Affected by size, speed and AoA
Overt

Question 22

Characteristics of an IR MWS. (4)

Answer 22

Detects IR emissions from muzzle flashes, motor ignition etc.
IR not as scattered as UV so provides good AoA
High false alarm rate due to IR clutter at low levels
Fitted to larger aircraft as detector unit needs to be cooled

Question 23

Characteristics of a UV MWS. (3)

Answer 23

Detect UV emissions from rocket motors and muzzle flashes
Relatively small, light, inexpensive and don’t require cooling
Detection range is limited due to atmospheric conditons

Question 24

Types of IR countermeausure. (3)

Answer 24

IRCM
- 360 coverage from lamp
DIRCM
- Directed beam to trash missile
LAIRCM
- DIRCM for larger aircraft

Question 25

How do we detect EO-guided ordnance? (1)

Answer 25

We don't initially

Question 26

What are the combat DF elements of Electronic Support? (2)

Answer 26

ELINT | COMINT

Question 27

Characteristics of ManPADS. (4)

Answer 27

Cheap Portable Versatile Short range + low-med alt

Question 28

Anatomy of a missile. (6)

Answer 28

``` Motor 1st Stage Booster Sensor Datalink Guidance + control Warhead ```

Question 29

Missile engagement process. (5)

Answer 29

``` Search Target acquisition Target tracking Launch Intercept ```

Question 30

Missile guidance loop. (4)

Answer 30

Sensor Error Guidance system Steering

Question 31

Phases of missile flight. (5)

Answer 31

``` Eject Launch Mid-course Terminal Detonate ```

Question 32

Missile guidance techniques, not systems. (3)

Answer 32

Command guidance Beam Riding Track via missile

Question 33

Command guidance process. (3)

Answer 33

Missile and target tracked Missile path calculated Steering commands uploaded

Question 34

Difference between CLOS and COLOS. (2)

Answer 34

CLOS - Pure pursuit COLOS - Target location prediction

Question 35

Command guidance characteristics. (4)

Answer 35

Not fire and forget Overt Multiple targets tracked simultaneously Susceptible to countermeasures

Question 36

Beam riding characteristics. (4)

Answer 36

Not fire and forget Overt Single engagement Hard to decoy

Question 37

Passive guidance characteristics. (4)

Answer 37

Fire and forget Covert Increased signal strength the closer to the target it gets Susceptible to countermeasures

Question 38

Semi-active guidance characteristics. (4)

Answer 38

Not fire and forget Overt Increased signal strength the closer to the target it gets Susceptible to countermeasures

Question 39

Active guidance characteristics. (4)

Answer 39

Fire and forget Overt Increased signal strength the closer to the target it gets Susceptible to countermeasures

Question 40

Fox codes. (3)

Answer 40

Fox 1 - Semi-active Fox 2 - Passive Fox 3 - Active

Question 41

TvM guidance characteristics. (4)

Answer 41

Not fire and forget Overt Single, multi function radar Susceptible to countermeasures

Question 42

ESM bearing measurements. (3)

Answer 42

Time Phase Amplitude

Question 43

MEZ encroachment message. (4)

Answer 43

C/s TRESPASS Missile system System location from RP

Question 44

Types of jamming. (2)

Answer 44

Noise jamming | Deception jamming