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16/12/2013, 04:15
... Space- TimeAdaptiveProcessing
forAirborneSurveillanceRadar
HongWang
SyracuseUniversity
70 .1MainReceiveApertureandAnalogBeamforming
70 .2DatatobeProcessed
70 .3TheProcessingNeedsandMajorIssues
70 .4TemporalDOFReduction
70 .5AdaptiveFilteringwithNeededandSample-Supportable
DOFandEmbeddedCFARProcessing
70 .6Scan-To-ScanTrack-Before-DetectProcessing
70 .7Real-TimeNonhomogeneityDetectionandSample
ConditioningandSelection
70 .8SpaceorSpace-RangeAdaptivePre-SuppressionofJammers
70 .9ASTAPExamplewithaRevisittoAnalogBeamforming
70 .10Summary
References
Space- TimeAdaptiveProcessing(STAP)isamulti-dimensionalfilteringtechniquedevelopedfor
minimizingtheeffectsofvariouskindsofinterferenceontargetdetectionwithapulsedairborne
surveillanceradar.Themostcommondimensions,orfilteringdomains,generallyincludetheaz-
imuthangle,elevationangle,polarizationangle,dopplerfrequency,etc.inwhichtherelativelyweak
targetsignaltobedetectedandtheinterferencehavecertaindifferences.Inthefollowing,theSTAP
principlewillbeillustratedforfilteringinthejointazimuthangle (space) anddopplerfrequency
(time)domainonly.
STAPhasbeenaveryactiveresearchanddevelopmentareasincethepublicationofReedetal.’s
seminalpaper[1].WiththerecentlycompletedMultichannelAirborneRadarMeasurementproject
(MCARM)[2]–[5],STAPhasbeenestablishedasavaluablealternativetothetraditionalapproaches,
suchasultra-lowsidelobebeamformingandDisplacedPhaseCenterAntenna(DPCA)[6].Muchof
STAPresearchanddevelopmenteffortshavebeendrivenbytheneedstomakethesystemaffordable,
tosimplifyitsfront-hardwarecalibration,andtominimizethesystem’sperformancelossinseverely
nonhomogeneousenvironments.Figure70.1isageneralconfigurationofSTAPfunctionalblocks[5,
7] whoseprincipleswillbediscussedinthefollowingsections.
c
1999byCRCPressLLC
... Space- TimeAdaptiveProcessing
forAirborneSurveillanceRadar
HongWang
SyracuseUniversity
70 .1MainReceiveApertureandAnalogBeamforming
70 .2DatatobeProcessed
70 .3TheProcessingNeedsandMajorIssues
70 .4TemporalDOFReduction
70 .5AdaptiveFilteringwithNeededandSample-Supportable
DOFandEmbeddedCFARProcessing
70 .6Scan-To-ScanTrack-Before-DetectProcessing
70 .7Real-TimeNonhomogeneityDetectionandSample
ConditioningandSelection
70 .8SpaceorSpace-RangeAdaptivePre-SuppressionofJammers
70 .9ASTAPExamplewithaRevisittoAnalogBeamforming
70 .10Summary
References
Space- TimeAdaptiveProcessing(STAP)isamulti-dimensionalfilteringtechniquedevelopedfor
minimizingtheeffectsofvariouskindsofinterferenceontargetdetectionwithapulsedairborne
surveillanceradar.Themostcommondimensions,orfilteringdomains,generallyincludetheaz-
imuthangle,elevationangle,polarizationangle,dopplerfrequency,etc.inwhichtherelativelyweak
targetsignaltobedetectedandtheinterferencehavecertaindifferences.Inthefollowing,theSTAP
principlewillbeillustratedforfilteringinthejointazimuthangle (space) anddopplerfrequency
(time)domainonly.
STAPhasbeenaveryactiveresearchanddevelopmentareasincethepublicationofReedetal.’s
seminalpaper[1].WiththerecentlycompletedMultichannelAirborneRadarMeasurementproject
(MCARM)[2]–[5],STAPhasbeenestablishedasavaluablealternativetothetraditionalapproaches,
suchasultra-lowsidelobebeamformingandDisplacedPhaseCenterAntenna(DPCA)[6].Muchof
STAPresearchanddevelopmenteffortshavebeendrivenbytheneedstomakethesystemaffordable,
tosimplifyitsfront-hardwarecalibration,andtominimizethesystem’sperformancelossinseverely
nonhomogeneousenvironments.Figure70.1isageneralconfigurationofSTAPfunctionalblocks[5,
7] whoseprincipleswillbediscussedinthefollowingsections.
c
1999byCRCPressLLC
... statistics for adaptive suppression, free from strong clutter
contamination. Available acquisition methods include the use of clutter -free range-cells for low PRF
systems, clutter -free Doppler bins for...