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Electronic Warfare Counter-measures Naval Weapons Systems.

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Presentation on theme: "Electronic Warfare Counter-measures Naval Weapons Systems."— Presentation transcript:

1 Electronic Warfare Counter-measures Naval Weapons Systems

2 EW Intro  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)

3 Increasing Importance of EW: 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

4 Three Components of EW  Electronic Support (ES) *ESM  Electronic Attack (EA) *ECM  Electronic Protection (EP) *ECCM

5 Electronic Support (ES) Surveillance of EM spectrum Immediate threat recognition Threat avoidance Homing and targeting. Passive EW or Signals Intelligence (SIGINT) 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.

6 ES Subdivisions: Indications and Warnings (I&W) Surveillance Intelligence New Technology

7 ES Receiver Design Requirements Wide spectrum surveillance Wide dynamic range Unwanted signal rejection Angle-of-Arrival measurement Signal Analysis capability Display Recording System

8 Electronic Attack (EA) Use of EM or directed energy to attack personnel, facilities, or equipment. Active and Passive EW

9 Non-Destructive EA « Confusion: Mask or hide real targets by cluttering the radar display. « Jamming « Spot Jamming « Barrage Jamming « Sweep Jamming « Chaff « Infrared flares (Torch)

10 Spot, Barrage, and Sweep Jamming Freq AmplTime Sweep Barrage Spot

11 Spot and Barrage Jamming Power Frequency Rcvr BW Spot Jamming Barrage Jamming

12 Rcvd Signal Amp. time Ineffective Jamming Effective Jamming PW PRT

13 Non-Destructive EA (cont.) Deception: Create a false image or changes the image on a radar display. 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

14 Self Screening Stand Off Stand Forward

15 EA-6B Prowler!!!!!!!!!

16 Destructive EA Anti-Radiation Missiles HARM Sidewinder Directed Energy

17 HARM High-speed Anti-Radiation Missile

18 HARM Results Portable Radar Site In Serbia

19 AIM-9 Sidewinder

20 Electronic Protection (EP) The protection of friendly combat capability against undesirable effect of friendly or enemy employment EW. Passive and Active EW.

21 Electronic Protection (EP) Three primary ways to defend ourselves from enemy EW Modify our radar - make it more complex and harder to jam Modify the Medium - Chaff and Torch Modify the platform

22 EP: Radar Design ± Power ± Frequency ± PRF ± PW ± Pulse Shape ± Antenna Design ± Scan Pattern

23 EP Factors ± Burnthrough: Increase signal strength to overpower jammer noise (ECCM) ± Emission Control (EMCON) ± Alpha ± Bravo ± Charlie ± Delta ± Operator Training

24 U.S. Shipboard EW Capabilities SLQ-32 “Sidekick” - on all combatants Ù Radar warning, detection and jamming Ù Uses an internal library to auto detect & categorize Infrared Flares - GIANT on all combatants Chaff - on all combatants

25 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

26 U.S. Airborne EW Capabilities ALQ ES system on SH-60 Seahawk ALQ-99 - EW system on EA-6B Prowler Ù Mimics radar signals ALQ EA jamming system on F-14 & F/A 18 ALQ 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

27 Questions?


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