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1、IRS2012,19thInternationalRadarSymposium,May23-25,Warsaw,PolandMulti-LookSARProcessing:NovelBenefits12DmytroM.VavrivandOleksandrO.BezvesilniyDepartmentofMicrowaveElectronics,InstituteofRadioAstronomyoftheNationalAcademyofSciencesofUkraine4ChervonoprapornaSt.,Kharkov61002,Ukraine1
2、2vavriv@rian.kharkov.ua,obezv@rian.kharkov.uaAbstract—Recentadvancesinthemulti-lookSARprocessingII.SARSYSTEMStechniquearediscussed.Itisdemonstratedthatsuchprocessingtechniqueisefficientnotonlyforthereductionofspecklenoise,CharacteristicsofthesystemsRIAN-SAR-KuandRIAN-butitcanbee
3、ffectivelyusedforthecorrectionofgeometricandSAR-XaresummarizedinTablesIandII.Thesystemsareradiometricimagedistortionsthatariseunderunstableaircraftdesignedtooperatefromlight-weightaircraftplatformsinflightconditions.Thecorrespondingbuilt-inmulti-lookSARside-lookingorsquintedstri
4、p-mapmodes.processingalgorithmshavebeendevelopedandimplemented.TheKu-bandSARsystemproducessingle-lookSARTheproposedsolutionsaresupportedbyradardataobtainedimagesof3-meterresolutioninrealtime.ThesystemisalsowithX-andKu-bandairborneSARsystemsinstalledonlight-capableofdetectionandi
5、ndicationofmovingtargets.weightaircrafts.Atime-domainconvolution-basedSARprocessingKeywords—Airborneradar,multi-lookprocessing,radaralgorithmwiththerangemigrationcorrectionbyinterpolationapplications,radarimaging,syntheticapertureradar.isimplemented.Thisalgorithmformseachpixelof
6、aSARimagewithseparateboththereferencefunctionandtheI.INTRODUCTIONmigrationcurve.Therefore,thealgorithmworkswellunderThemulti-lookprocessingtechniqueiswidelyusedinunstableflightconditions.ThealgorithmisfastenoughforthemodernSARsystemstoimprovequalityofSARimages[1].operationinreal
7、time,ifthelengthoftheconvolutionisnottooAccordingtothistechnique,theradardatacollectedonlong.Withanarrow-beamantennaandapre-filteringconsequentsegmentsoftheplatformtrajectoryisprocessedprocedureused,thisrequirementwassatisfied.independentlytobuildseveralSARimagesofthesameSinceth
8、enarrow-beamantennaisexploited,wehavetogroundsc
