简介：在到单眼用的图象序列的特性的暗示，一个方法基于过滤预言图象序列的飞机姿势的扩大Kalman被建议。与过滤技术的伪鈥?尾鈥?纬马厩状态，一个数学模型被造认识到图象序列的飞机姿势的预言。在模型，不是仅仅噪音的影响，在图象期间，进程被考虑，而且在经常的速度模型的低精确的缺点被克服。加速的推导被认为噪音同样白。预兆的曲线与Matlab阴谋证明使用这个方法的错误的最大值是大约3鈥吗？它的精确因此更高，错误标准差是比经常的速度模型的那些低的。CLC数字TP751由科学的中国学院的革新条款支持了(资助没有。C04708Z）

简介：Basedonthetheoryoffuzzylogic,themethodofobfuscatingcoefficientandreliabilitytofusetheinformationofhandgeometryandpalmprintsforidentitydiscriminationisproposed.Theexperimentprovesthatthemethodisusefulandeffective.Itsidentificationrateisupto90%,whichis20%-30%higherthanthatofusinghandgeometryorpalmprintssingly,thusitcanbewidelyusedinhighlydemandedsecurityfield,suchasfinance,entranceguard,etc.

简介：Intheprocessofconceptdesignoffshoreplatforms,itisnecessarytoselectthebestfromfeasiblealternativesthroughcomparisonandfiltering.Fuzzyoptimalselectioninmultiplestagesisanusefulmethodinengineeringdecisionmaking,hutinsomecases,itisdifficulttomakeadistinctionbetweenthefirstalternativeandthesecond.Thereforeitisnecessarytoimprovethefuzzyoptimalselectionmethodwithmultiplestages.Inthispaper,usingfuzzycrossiterationoptimalmodeling,theweightsensitivityanalysisismadefirstly.Thenaseconddecision-makingmethodtosolvefuzzyoptimalproblemsisproposed.Itsbasicprincipleistheinversereasoninginmathematics.Thismethodexpandstheappliedrangeoffuzzyoptimalselection.Finallythismethodisusedintheconceptdesignofoffshoreplatform.Acasestudyshowsthatthismethodisscientific,reasonableandeasytouseinpractice.

简介：Atpresent,chaoticcommunicationshavebeenwidelystudied.However,theseresearchesmainlyfocusonthebinarysystemswhiletheresearchesofM-arychaoticcommunicationsarenotextensive.Tochangethesituation,achaosM-arymodulationmethodbasedonphaseplanepartitionofHamiltonmapisproposed.Firstly,thechaoticmodelofHamiltonmapanditsphaseplanefeaturesaredescribed,andthenthewayofcreatingthechaosM-arymodulationisdiscussed.Next,toevaluatetheproposedmethod,thesystemsimulationresultsandanalysisaregiven.Finally,thechaosM-arymodulationmethodisappliedtocommunications.

简介：这篇论文提供复合条件质问(CCQ)和基于空格从踪迹代数学导出的踪迹信息使用要求引导的一个形式化方法的应用程序问题的一个形式化的定义。与解决CCQ的应用程序问题的形式化的进程，CCQ的申请的正式要求说明被给，一形式化，到正式要求说明的要求引导的结果的自动印射被执行，软件系统模型和应用程序代码被开发。通过住房信息上的全面质问的一个样品应用程序，可行性形式化，为CCQ的应用程序问题的自动软件开发被证明。结果关于形式化和自动软件开发为另外的问题有重要含意。

简介：AnewfilteringmethodforSARdatade-noisingusingwaveletsupportvectorregression(WSVR)isdeveloped.OnthebasisofthegreyscaledistributioncharacterofSARimagery,thelogarithmicSARimageasanoisepollutedsignalistakenandthenoisemodelassumptioninlogarithmicdomainwithGaussiannoiseandimpactnoiseisproposed.Basedonthebetterperformanceofsupportvectorregression(SVR)forcomplexsignalapproximationandthewaveletforsignaldetailexpression,thewaveletkernelfunctionischosenassupportvectorkernelfunction.ThenthelogarithmicSARimageisregressedwithWSVR.Furthermoretheregressiondistanceisusedasajudgmentindexofthenoisetype.Accordingtothejudgmentofnoisetypeeverypixelcanbeadaptivelyde-noisedwithdifferentfilters.Throughanapproximationexperimentforaone-dimensionalcomplexsignal,thefeasibilityofSARdataregressionbasedonWSVRisconfirmed.AfterwardtheSARimageistreatedasatwo-dimensionalcontinuoussignalandfilteredbyanSVRwithwaveletkernelfunction.Theresultsshowthatthemethodproposedherereducestheradarspecklenoiseeffectivelywhilemaintainingedgefeaturesanddetailswell.

简介：Aimingtotheestimationofsourcenumbers,mixingmatrixandseparationofmixingsignalsunderunderdeterminedcase,thearticleputsforwardamethodofunderdeterminedblindsourceseparation(UBSS)withanapplicationinultra-wideband(UWB)communicationsignals.ThemethodisbasedonthesparsecharacteristicofUWBcommunicationsignalsinthetimedomain.Firstly,findingthesinglesourceareabycalculatingtheratioofobservedsamplingpoints.Thenanalgorithmcalledhough-windowedmethodwasintroducedtoestimatethenumberofsourcesandmixingmatrix.Finallytheseparationofmixingsignalsusingamethodbasedonamendedsubspaceprojection.ThesimulationresultsindicatethattheproposedmethodcanseparateUWBcommunicationsignalssuccessfully,estimatethemixingmatrixwithhigheraccuracyandseparatethemixingsignalswithhighergaincomparedwithotherconventionalalgorithms.Atthesametime,themethodreflectsthehigherstabilityandthebetternoiseimmunity.

简介：TimedomainABCDmatrixformalismisausefulmodelforanalyzingthecharacteristicsofactivelymodelockedfiberlaser.Basedonthismodelandgivenmoreconsiderationontheinfluencesofopticalfiberdispersionandopticalfibernonlinearity,thelasercharacteristicofactivelymodelockedfiberlaserisanalyzed,andthecomparisionofthetheoreticalanalysisresultswithexperimentalonesisgiven.

简介：AmodifiedversionoftheCotte,Lions,MorelandCoiltheoryforimageselectivesmoothingandedgedetectionisproposed.Comparingwiththeirmodel,themostimportantadvantageofthismodificationisthattheconvolutionwithGaussianprocessesinthefilteringprocessisreplacedbysolvinganinitial-boundaryvalueproblemfortheheatequation,whichsimplifiesthenumericalschemetosomeextent.Numericalexperimentsonnaturalimagesarepresentedforthismodel.

简介：在一个伪同步的代码部门多重存取(QS-CDMA)系统，在起源附近的关联函数影响系统性能和奇怪的函数象平函数一样重要。三种零个关联地区(ZCZ)序列被用来分析并且比较关联功能。调音的二进制阶段移动(BPSK)有传播在添加剂白人Gaussian噪音(AWGN)上编码隧道的三种QS序列的QS-CDMA系统的模拟证明这些序列是伪直角的，他们因此对QS-CDMA合适系统。在系统表演和顺序的零个关联地区之间的关联也被证明。

简介：Tomakeuseofthepriorknowledgeoftheimagemoreeffectivelyandrestoremoredetailsoftheedgesandstructures,anovelsparsecodingobjectivefunctionisproposedbyapplyingtheprincipleofthenon-localsimilarityandmanifoldlearningonthebasisofsuper-resolutionalgorithmviasparserepresentation.Firstly,thenon-localsimilarityregularizationtermisconstructedbyusingthesimilarimagepatchestopreservetheedgeinformation.Then,themanifoldlearningregularizationtermisconstructedbyutilizingthelocallylinearembeddingapproachtoenhancethestructuralinformation.Theexperimentalresultsvalidatethattheproposedalgorithmhasasignificantimprovementcomparedwithseveralsuper-resolutionalgorithmsintermsofthesubjectivevisualeffectandobjectiveevaluationindices.

简介：Opticaltimedivisonmultiplexing(OTDM)isoneofthepromisinigwaysforthefuturehigh-speedopticalfibercommunicationnetworks.All-opticalswitchis,beingoneofthecoretechnologiesofOTDMsystemsandnetorks,crucialtorealizethevaroussignalprocessesincludingtime-divisiondemultiplexing,packerswitching,all-opticalregeneratingandsoon.Thisthesismainlystudiesvariousall-opticalswitchtechnologiesandtheirutilizationinthefieldsofall-opticalsignalprocessingsintheOTDMsystemsandnetworks.Themainjobsarelistedasfollows.(1)Anovelall-opticalultrafastdemultiplexingschemeusingthesolitonself-trappingeffectinbirefringentfiberisproposed.(2)ThedemultiplexingperformanceoftheNonlinearOPticalLoopMirror(NOLM)isthoroughlyanalyzedanditsoptimizationisfurtherdiscussed.(3)Theperformanceanalysisandtheconfigurationoptimizationoftheall-opticalswitchesbasedontheSemiconductorOpticalAmplifier(SOA)aresystematicallypresented.Thespeedlimitationoftheall-opticalSOAswitchesinducedbythefastgaindepletionofSOAisdiscussed,Besides,anovelSOAswitchisproposed,whichadoptstheasymmetricMach-ZehnderInterferomerterconfiguration.(4)The8×2.5Gb/sOTDMexperimentaltransmissionsystemalong105kmstandardfiberisrealizedusingtheNOLMdemultiplexer.(5)TheNOLMswitchisusedtorealizetheall-optical3Rregenerationof2.5G/sReturn-to-Zerosignal.(6)ThefeasibilityandlimitationoftheallopticalSOApacketswitchisdiscussed.AndadevelopedMZIconfigurationofSOApacketswitchisfurthershowntoimprovethepackerswitchingperformance.Finally,anall-opticalpacketdroppingnodesuitableinthenetworkswithringorbusconfingurationandanall-opticalpacketswithcingnodeintheShuffleNetnetworksareproposedtoshowthefeasibilityofall-opticalpacketswitchingthroughcombiningtheall-opticalswitchesandthereasonablelogicdecisions.

简介：Terahertzwaves,sittinginthegapbetweenthemiddleinfraredandmillimeterwaveregions,areknownasthelastvacantareaoftheelectromagneticspectrumthathasnotquitebeenunderstoodandbroughtintoapplications.TheTerahertzregionhasbeenthefocusofresearchworldwidesinceearly1990s.Duetotheiruniquecharacteristics,Terahertztechnologieshaveawiderangeofapplications,suchashazarddetection,highspeeddatacommunications,radioastronomy,andbiomedicalimaging.

简介：一个修改基因算法(GA)被建议了，它在察觉到系统的伪静电干扰纤维栅栏习惯于波长解调。GA的修正方法被介绍了，相关数学模型被建立了。客观功能和与GA互连的单个健康评估策略也被建立。GA上的人口尺寸，染色体尺寸，代，转线路概率和变化概率的影响被分析了，并且修改GA的最佳的参数被获得了。模拟和实验，修改GA能被用于察觉到系统的伪静电干扰纤维栅栏的表演，和精确是的波长解调平等者到或不到3下午。CLC数字TN253

简介：高贵金属nanoparticles的表面电浆子回声导致光吸收改进效果，它用分离偶极子近似(DDA)的一般数字方法在太阳的cell.By有大潜在的应用，我们学习吸收和银nanodisks(2DSSN)在单个水晶硅上穿的二维的平方的散布性质单个水晶硅的有效反射索引模型上的太阳的ceil.Based太阳装壁板圩，我们调查光改进

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简介：UsingthesimpleinverseFouriertransformation(FT),theindexmodulationstructurewiththesampledperiodforthesampledfiberBragggratingswasdesigned.Inthismethod,theenablechannelsareoperatedatidenticalwavelengthwhiletheunablechannelsarealmostsuppressedcompletely.Theenableandunablechannelscanbeestablishedbasedontheapplications.Thistechniqueisveryusefultodesigntheopticaldevicessuchasopticaladdanddropmultiplexers(OADMs),andinterleaverswithdispersionanddispersionslopecompensation.

简介：ThispaperpresentsanRFreceiverofzero-IntermediateFrequency(IF)architectureforCognitiveRadio(CR)communicationsystems.Zero-IFarchitecturereducetheimagerejectfilterandIFfilter,soitisexcellentinlowcost,compactvolume,andlowpowerdissipation.Thereceiveremploysthreedigitalattenuatorandahighgain,highlinearitylownoiseamplifiertoachievewidedynamicrangeof70dBandhighreceivingsensitivityof-81dBm.AfullybalancedI/QdemodulatorandadifferentialLocalOscillator(LO)chipsareusedtominimizethenegativeeffectscausedbysecond-orderdistortionandLOleakage.Inordertoselectan8MHz-channelfrom14continuousoneslocatedinUHFband(694-806MHz)accurately,approachofchannelselectivitycircuitsisproposed.TheRFreceiverhasbeendesigned,fabricated,andtest.Themeasuredresultshowsthatthenoisefigureis3.4dB,andtheerrorvectormagnitudeis7.5%whentheinputpoweris-81dBm.

简介：Indatacenters,thetransmissioncontrolprotocol(TCP)incastcausescatastrophicgoodputdegradationtoapplicationswithamany-to-onetrafficpattern.Inthispaper,weintendtotameincastatthereceiver-sideapplication.Towardsthisgoal,wefirstdevelopananalyticalmodelthatformulatestheincastprobabilityasafunctionofconnectionvariablesandnetworkenvironmentsettings.Wecombinethemodelwiththeoptimizationtheoryandderivesomeinsightsintominimizingtheincastprobabilitythroughtuningconnectionvariablesrelatedtoapplications.Then,enlightenedbytheanalyticalresults,weproposeanadaptiveapplication-layersolutiontotheTCPincast.Thesolutionequallyallocatesadvertisedwindowstoconcurrentconnections,anddynamicallyadaptsthenumberofconcurrentconnectionstothevaryingconditions.SimulationresultsshowthatoursolutionconsistentlyeludesincastandachieveshighgoodputinvariousscenariosincludingtheoneswithmultiplebottlenecklinksandbackgroundTCPtraffic.

简介：AmultisensordistributedextendedKalmanfilteringalgorithmispresentedfornonlinearsystem,inwhichthedynamicequationofthesystemandtheequationsofsensor’smeasurementsarelinearizedintheglobalestimateandglobalpredictionrespectivelyandthesuboptimalglobalestimatebasedonallavailableinformationcanbereconstructedfromtheestimatescomputedbylocalsensorsbasedsolelyontheirownlocalinformationandtransmittedtothedatafusioncenter.Ananalysisofthepropertiesofthealgorithmpresentedhereshowsthattheglobalestimatehashigherprecisionthanthelocaloneandsmallerlinearizationerrorthantheexistingmethod.Finally,anapplicationofthealgorithmtoradar/IRtrackingofamaneuveringtargetisillustrated.Simulationresultsshowtheeffectivenessofthealgorithm.