Transcript Electronic Warfare Counter

Electronic
Warfare
Counter-measures
Naval Weapons Systems
EW Intro
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EW is a component of Information
Operations (IO)
IO: Military strategy which implements
Information Warfare (IW).
IO includes integrated use of OPSEC,
military deception, PSYOPS, EW, and
physical destruction. (discussed more
in C4I Lesson)
Increasing Importance of
EW:
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Increased reliance on radar
OTH targeting
Increased use of Communications
Tactical Data Systems (TDS)
Increased speed of missiles and weapons
systems
High-speed detection and tracking
Active-homing or passive-homing long-range
missiles give little warning
Three Components of EW
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Electronic Support (ES) *ESM
Electronic Attack (EA) *ECM
Electronic Protection (EP)
*ECCM
Electronic Support (ES)
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Surveillance of EM spectrum
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Immediate threat recognition
Threat avoidance
Homing and targeting.
Passive EW or Signals Intelligence (SIGINT)
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Electronic Intelligence (ELINT): Info derived from
foreign non-communications EM information,
particularly radar.
Communications Intelligence (COMINT): Info
derived from foreign communications.
Advantages/limitations of passive EW.
ES Subdivisions:
Indications and Warnings
(I&W)
 Surveillance
 Intelligence
 New Technology
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ES Receiver Design Requirements
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Wide spectrum surveillance
Wide dynamic range
Unwanted signal rejection
Angle-of-Arrival measurement
Signal Analysis capability
Display
Recording System
Electronic Attack (EA)
Use of EM or directed energy
to attack personnel, facilities,
or equipment.
 Active and Passive EW
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Non-Destructive EA
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Confusion: Mask or hide real targets
by cluttering the radar display.
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Jamming
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Spot Jamming
Barrage Jamming
Sweep Jamming
Chaff
Infrared flares (Torch)
Spot, Barrage, and Sweep Jamming
Sweep
Freq
Barrage
Spot
Ampl
Time
Spot and Barrage Jamming
Rcvr BW
Power
Spot Jamming
Barrage Jamming
Frequency
Effective Jamming
PW
Rcvd
Signal
Amp.
PRT
Ineffective
Jamming
time
Non-Destructive EA (cont.)
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Deception: Create a false image or changes
the image on a radar display.
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Repeaters: Create false echo by delaying rcvd
radar signals & retransmitting at later time.
Transponders: Create false signal by playing back
a stored replica of the radar signal.
Chaff
Radar Decoys
Self Screening
Stand Off
Stand Forward
EA-6B Prowler!!!!!!!!!
Destructive EA
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Anti-Radiation Missiles
 HARM
 Sidewinder
Directed Energy
HARM
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High-speed Anti-Radiation Missile
HARM
Results
Portable Radar Site
In Serbia
AIM-9 Sidewinder
Electronic Protection (EP)
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The protection of friendly combat
capability against undesirable effect
of friendly or enemy employment
EW.
Passive and Active EW.
Electronic Protection (EP)
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Three primary ways to defend ourselves
from enemy EW
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Modify our radar - make it more complex
and harder to jam
Modify the Medium - Chaff and Torch
Modify the platform
EP: Radar Design
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Power
Frequency
PRF
PW
Pulse Shape
Antenna Design
Scan Pattern
EP Factors
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Burnthrough: Increase signal strength
to overpower jammer noise (ECCM)
Emission Control (EMCON)
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Alpha
Bravo
Charlie
Delta
Operator Training
U.S. Shipboard EW Capabilities
SLQ-32 “Sidekick” - on all combatants
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Radar warning, detection and jamming
Uses an internal library to auto detect &
categorize
Infrared Flares - GIANT
on all combatants
Chaff - on all combatants
U.S. Shipboard EW Capabilities
 SSQ-108 “Outboard” - on some Spruance class,
DDG, CG, LHA, LHD
 Any ship with SSES
 real-time, over-the-horizon passive detection,
localization, and targeting
 SLQ-39 Chaff Buoy - on Arleigh Burke class
 Rubber Duck – looks like a life boat container
U.S. Airborne EW Capabilities
 ALQ-142 - ES system on SH-60 Seahawk
 ALQ-99 - EW system on EA-6B Prowler
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Mimics radar signals
 ALQ-126 - EA jamming system on F-14 & F/A 18
 ALQ-165 - EA jamming system on F/A-18
 ALR-47 - ES detection system on S-3 Viking
 ALR-73 - ES detection system on E-2 Hawkeye
 Chaff
- on SH-60 Seahawk
Questions?