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15 个结果
  • 简介:为在期望的多搬运人信号隐藏的干扰,这份报纸建议新奇察觉和识别算法。算法不能仅仅由高顺序的cumulant检测单个搬运人的干扰(SCI),而且基于光谱特性发现多搬运人信号。而且,算法能区分SCI的调整类型。算法不取决于任何优先的知识并且帮助数据,它对实际应用慈悲。分析和模拟结果证明建议算法是有效的。

  • 标签: 多载波信号 识别算法 干扰检测 高阶累积量 载波干扰 频谱特性
  • 简介:Thedegradationdataofmulti-componentsinmissileisderivedbyperiodicaltesting.Howtousethesedatatoassessthestoragereliability(SR)ofthewholemissileisadifficultproblemincurrentresearch.AnSRassessmentmodelbasedoncompetitionfailureofmulti-componentsinmissileisproposed.Byanalyzingthemissilelifeprofileanditsstoragefailurefeature,thekeycomponentsinmissileareobtainedandthecharacteristicsvoltageisassumedtobeitskeyperformanceparameter.Whenthevoltagetestingdataofkeycomponentsinmissileareavailable,astatespacemodel(SSM)isappliedtoobtainthewholemissiledegradationstate,whichisdefinedasthemissiledegradationdegree(DD).AWienerprocesswiththetime-scalemodel(TSM)isappliedtobuildthedegradationfailuremodelwithindividualvariabilityandnonlinearity.TheWeibulldistributionandproportionalriskmodelareappliedtobuildanoutburstfailuremodelwithperformancedegradationeffect.Furthermore,acompetitionfailuremodelwiththecorrelationbetweendegradationfailureandoutburstfailureisproposed.Anumericalexamplewithasetofmissilesinstorageisanalyzedtodemonstratetheaccuracyandsuperiorityoftheproposedmodel.

  • 标签: COMPETITION FAILURE MODEL storage reliability (SR)
  • 简介:Analgorithmofhighlymaneuveringtargettrackingisproposedtosolvetheproblemoflargetrackingerrorcausedbystrongmaneuver.Inthisalgorithm,anewestimator,namedasmulti-parameterfusionSinger(MF-Singer)modelisderivedbasedontheSingermodelandthefuzzyreasoningmethodbyusingradialaccelerationandvelocityofthetarget,andappliedtotheproblemofmaneuveringtargettrackinginstrongmaneuveringenvironmentandoperatingenvironment.ThetrackingperformanceoftheMF-Singermodelisevaluatedandcomparedwithothermanueveringtrackingmodels.ItisshownthattheMF-Singermodeloutperformsthesealgorithmsinseveralexamples.

  • 标签: maneuvering target MULTI-PARAMETER FUSION SINGER (MF-Singer)
  • 简介:Inthispaper,weproposeadynamicmulti-descriptorfusion(DMDF)approachtoimprovingtheretrievalaccuracyof3-dimensional(3D)modelretrievalsystems.First,anindependentretrievallistisgeneratedbyusingeachindividualdescriptor.Second,weproposeanautomaticrelevant/irrelevantmodelsselection(ARMS)approachtoselectingtherelevantandirrelevant3Dmodelsautomaticallywithoutanyuserinteraction.Aweighteddistance,inwhichtheweightassociatedwitheachindividualdescriptorislearntbyusingtheselectedrelevantandirrelevantmodels,isusedtomeasurethesimilaritybetweentwo3Dmodels.Furthermore,adescriptor-dependentadaptivequerypointmovement(AQPM)approachisemployedtoupdateeveryfeaturevector.Thissetofnewfeaturevectorsisusedtoindex3Dmodelsinthenextsearchprocess.Four3DmodeldatabasesareusedtocomparetheretrievalaccuracyofourproposedDMDFapproachwithseveraldescriptorsaswellassomewell-knowninformationfusionmethods.ExperimentalresultshaveshownthatourproposedDMDFapproachprovidesapromisingretrievalresultandalwaysyieldsthebestretrievalaccuracy.

  • 标签: 三维模型检索 描述符 3D模型 信息融合方法 特征向量 多特征融合
  • 简介:Theanalog-to-informationconvertor(AIC)isasuccessfulpracticeofcompressivesensing(CS)theoryintheanalogsignalacquisition.Thispaperpresentsamulti-narrowbandsignalssamplingandreconstructionmodelbasedonAICandblocksparsity.Toovercomethepracticalproblems,theblocksparsityisdividedintouniformblockandnon-uniformblocksituations,andtheblockrestrictedisometrypropertyandsub-samplinglimitindifferentsituationsareanalyzedrespectivelyindetail.TheoreticalanalysisprovesthatusingtheblocksparsityinAICcanreducetherestrictedisometricconstant,increasethereconstructionprobabilityandreducethesub-samplingrate.Simulationresultsshowthattheproposedmodelcancompletesub-samplingandreconstructionformulti-narrowbandsignals.ThispaperextendstheapplicationrangeofAICfromthefiniteinformationratesignaltothemulti-narrowbandsignalsbyusingthepotentialrelevanceofsupportsets.Theproposedreceivingmodelhaslowcomplexityandiseasytoimplement,whichcanpromotetheapplicationofCStheoryintheradarreceivertoreducetheburdenofanalog-todigitalconvertor(ADC)andsolvebandwidthlimitationsofADC.

  • 标签: COMPRESSIVE sensing (CS) block SPARSITY analog-toinformation
  • 简介:由于嵌入的设备的限制尽最大努力以精力,处理力量,和记忆缩放的无线连接和资源和有损耗的网络(LLN)的unreliability,网络拥挤可以在一种紧急情况发生并且导致重要的包损失和端对端的延期。减轻网络拥挤的效果,这份报纸基于多度量标准(CCRPM)建议一个集中的拥挤控制路由协议。让候选人父母在网络建设的过程减少网络拥挤的概率联合一个节点,缓冲区占有率,无线连接质量,和亚节点的当前的数字的剩余精力。另外,当网络拥挤发生时,决定拥挤的节点的亚节点是否需要基于交通分析被交换采用一个集中的方法。理论分析和广泛的模拟结果证明与存在路由协议相比,CCRPM的性能在减少网络拥挤的概率显著地被改进,延长平均网络一生,增加网络产量,并且减少端对端的延期。

  • 标签: LLN 拥挤控制 多度量标准 集中的方法 路由协议
  • 简介:Asanimportantapplicationresearchtopicoftheintelligentaviationmulti-station,collaborativedetectingmustovercometheproblemofscoutingmeasurementwithstatusof“fragmentation”,andtheNP-hardnessproblemofmatchingassociationbetweentargetandmeasurementintheprocessofscoutingtodata-link,whichhascomplicatedtechnicalarchitectureofnetworkconstruction.Inthispaper,takingadvantageofcooperationmechanismonsignallevelintheaviationmulti-stationsympatheticnetwork,amethodofobtainingtargettimedifferenceofarrival(TDOA)measurementusingmulti-stationcollaborativedetectingbasedontime-frequencyassociationisproposed.Themethodcannotonlyachievematchingbetweentargetanditsmeasurement,butalsoobtainTDOAmeasurementbyfurtherevolutionarytransactionthroughrefreshingsequentialpulsetimeofarrival(TOA)measurementmatrixformatchingandcorrelating.SimulationresultsshowthattheaccuracyofTDOAmeasurementhassignificantsuperiorityoverTOA,anddetectionprobabilityoffalseTDOAmeasurementintroducedbynoiseandfakemeasurementcanbereducedeffectively.

  • 标签: data-link TIME-FREQUENCY correlation AVIATION multistation SYNERGISTIC
  • 简介:Hyper-spectralimagingspectrometerhashighspatialandspectralresolution.Itsradiometriccalibrationneedstheknowledgeofthesourcesusedwithhighspectralresolution.Inordertosatisfytherequirementofsource,anon-orbitradiometriccalibrationmethodisdesignedinthispaper.Thischainisbasedonthespectralinversionaccuracyofthecalibrationlightsource.Wecompilethegeneticalgorithmprogresswhichisusedtooptimizethechanneldesignofthetransferradiometerandconsiderthedegradationofthehalogenlamp,thusrealizingthehighaccuracyinversionofspectralcurveinthewholeworkingtime.Theexperimentalresultsshowtheaveragerootmeansquarederroris0.396%,themaximumrootmeansquarederroris0.448%,andtherelativeerrorsatallwavelengthsarewithin1%inthespectralrangefrom500nmto900nmduring100hoperatingtime.Thedesignlaysafoundationforthehighaccuracycalibrationofimagingspectrometer.

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  • 简介:Atunableself-seededmulti-wavelengthBrillouin-erbiumfiberlaser(BEFL)isproposedanddemonstratedbasedonafew-modefiberfilter(FMFF)withvaryingtemperature.TheFMFFconfigurationisasectionofuncoatedfew-modefiber(FMF)sandwichedbetweentwoup-tapers.Asthetemperaturevariesfrom25°Cto125°C,thetransmissionspectrumofFMFFmovestowardsthelongerwavelength.Theself-excitedBrillouinpumpisinternallyachievedbycascadedstimulatedBrillouinscattering(SBS)inthesinglemodefiber(SMF).ThenemployingtheFMFFtemperaturevariationcharacteristicsintheringcavityfiberlaser,themulti-wavelengthoftheoutputlasercanbetuned,andthetunablerangeisabout8.0nm.Thegenerationofupto15BrillouinStokeswavelengthswith16dBopticalsignal-to-noiseratio(OSNR)isrealized.

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  • 简介:9月8日,国务办公厅发布《关于加快推进农业供给侧结构性改革大力发展粮食产业经济的意见》(以下简称《意见》)。《意见》明确,加大对营养健康、质量安全、“智慧粮食”等领域相关基础研究和急需关键技术研发的支持力度,推进信息、生物、新材料等高新技术在粮食产业中的应用,加强国内外粮食质量检验技术标准比对及不合格粮食处理技术等研究。

  • 标签: 国务院办公厅 粮食产业 产业经济 高新技术 质量检验技术 营养健康
  • 简介:为了更进一步完善稿件评审机制,提高稿件的评审质量及评审效率,缩短本刊出版时滞周期,确保具有原创性高质量学术水平的稿件及时发表,本刊编辑部现面向国内外诚聘本学科各领域审稿专家。诚聘审稿专家的条件如下:具有博士学历、副教授及以上技术职称,具有良好的科研道德,处于本学科各研究领域的中青年专家、学者。

  • 标签: 电子科学 科研道德 稿件评审 技术职称 博士学历 审稿意见
  • 简介:尊敬的作者:您好,为了更好地服务于广大作者、审稿专家和读者,方便查询论文信息、投稿、询稿及审稿,提高杂志工作效率,《中国电子科学研究学报》编辑部引进了期刊在线采编系统,目前已经正式开通,请您登陆如下网址,并注册进行投稿。在线采编系统启用后,我们将不再接收电子邮件投稿,造成不便,敬请谅解。

  • 标签: 采编系统 电子科学 电子邮件投稿 论文信息 工作效率 HTTP
  • 简介:在硅晶圆上生产半导体激光器一直以来是半导体行业的目标,这种制造工艺向来极具挑战性。近日,新加坡科学技术研究A*STAR开发出一种新颖的制造方法,成本低廉、过程简便且可扩展性强。该混合硅激光器将III-V族半导体(如砷化镓和磷化铟)的发光特性与当前成熟的硅制造技术完美结合起来,可以将光子和微电子元件集成在单一硅芯片之中,从而获得价格低廉、可大批量生产的光学器件。

  • 标签: 科学技术研究院 光学器件 硅晶圆 微电子元件 磷化铟 硅芯片
  • 简介:2017移动通信天线质量高峰论坛于10月24-25日在广州隆重召开。本次会议邀请产学研用各方领导专家,包括西安电子科技大学副校长、天线系统产业联盟理事长杨银堂和中国工程院士、天线系统产业联盟主席段宝岩等众多业内专家以及三大电信运营商、中国铁塔公司和京信、华为等国内天线领军企业.

  • 标签: 通信天线 产业联盟 移动通信 中国工程院院士 通信研究 运营商
  • 简介:文章通过探讨如何整合信息化高职英语教学课堂,打造“智慧英语课堂”,营造个性化、自主化学习环境,正确引导学生利用信息平台辅助英语学习。为学习者创造理想的学习环境,进一步提高高职英语教学的效果。

  • 标签: 信息技术 公共英语 教学模式 整合