FFI- FACTS
N o r w e g i a n D e f e n c e R e s e a r c h E s t a b l i s
h m e n t
The EKKO II experimental digital radar jammer is capable of
storing digitised replica of radar signals, modulating them, and
retransmitting signals resembling extended real targets.
The Digital RF Memory or DRFM is a core technology for all
modern radar jamming systems. Developing this technology and
producing an experimental system based on it has been a long term
activity at FFI since 1995, with multiple goals:
Tounderstandcapabilitiesandlimitationsofthetechnology
Toconductfieldtrialsagainstvariousradarstoassessvulnerabilityanddevelopoperationaltechniques
Todevelopoperationalconceptsforradarjamming
Toestablishbasicknowledgerequiredtosupportacquisitionprograms
Toparticipateininternationalresearchprogrammes
Operational
relevanceJamminganddeceptionofradarsystemsarerelevantformanymilitarysituations,platformsandscenarios.Somesituationsareshownintheillustrations,otherusesmaybe:
Asselfprotectionforaircraft,groundvehiclesandshipsagainst
radarguidedmissilesbybreakingthelockofmissileseekers
Toenhancesurvivabilityofnonprotectedplatforms,suchasattackaircraftorescortofnoncombatships,byjammingfromdedicatedjammingplatforms
Ascountermeasureagainstwideareasurveillanceradarbydeceivingsyntheticapertureradar(SAR)satellites
Topreventsituationalawarenessbyintroducingfalseinformationorhidingtrueinformation
Toincreasethevulnerabilityofopponentsanddegradethedeliveryefficiencyofweaponsbydenyinglongrangeradarbasedtargetidentificationorlongrangeradarbasedbattledamagedassessment(BDA)
EKKO II digital radar jamming
Radar jammer.Whichtargettoengage?
January 2
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8 D
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FI
P.O.Box25NO2027KjellerInstituttveien20NO2007KjellerTelephone+4763807000www.ffi.no
N o r w e g i a n D e f e n c e R e s e a r c h E s t a b l i s
h m e n t
EKKO II
descriptionEKKOIIisanexperimentaljammingsystemdevelopedatFFI.Itisdesignedtobemodular,easilyupgradableandflexible,anditrepresentsthecoretechnologyrequiredforallthetaskslistedabove.
EKKOIIcanreceiveandstorethesignalemittedfromaradar,modifyit,e.g.byapplyingatargetsignature,andretransmitthemodifiedsignaltowardstheradar.Thisisdoneinrealtimeoneachreceivedradarpulse.Thestoredsignalprovidesahighfidelitydigitalcopyoftheradarsignal.Themodificationsormodulationsappliedcanemulatethereflectionprocessesthatoccurinreallifesothattheradarseesfalsetargetswithnaturalmotionsandanaturalradarsignature.
Thesystemhasbeendeveloppedwiththelatestcommerciallyavailablehigh
speeddigitalelectronicsandmicrowavetechnologies.EKKOIIoutperformsoperationalradarjammers,butisatthesametimeabletoemulatemanyoftheirlimitations,sothattheresultsdeducedfromtrialsconductedwithEKKOIIareoperationallyrelevant.
EKKO II a proven system
EKKOIIhasparticipatedinnationalandinternationaltrials,operatingagainstvarioustypesofradarsincludingfighteraircraftradar,UAVradarandMPAradar.Thesystemisincontinuousdevelopment,andwillcontinueparticipatingintrials.
EKKOIIisoperatedfromamobilelaboratoryinatrailer,measuringapproximately30kg/200x50x50cm.Itisdesignedformaximumflexibility,easeofupgradingandfurtherdevelopment.AnoperationalsystemwithdedicatedtasksbasedonEKKOII
technologycouldbeinthe10kgclasswithina50x50x50cmvolume,e.g.foranairborneapplication.
Pointsofcontact:[email protected]@ffi.no
Flexible.Thedigitalradarjammerisequallyrelevantforair,seaandlandoperations.
