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ASTM E2213-2003 路边和运载工具系统间远程通信和信息交换用标准规范.5GHz频带上专用短程通信(DSRC)媒体访问控制(MAC)和物理层(PHY)规范

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【英文标准名称】:StandardSpecificationforTelecommunicationsandInformationExchangeBetweenRoadsideandVehicleSystems&8212;5GHzBandDedicatedShortRangeCommunications(DSRC)MediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications
【原文标准名称】:路边和运载工具系统间远程通信和信息交换用标准规范.5GHz频带上专用短程通信(DSRC)媒体访问控制(MAC)和物理层(PHY)规范
【标准号】:ASTME2213-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E17.51
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:信息交流;运载工具;物理层;电信;多路存取计算机;媒体访问控制;通信设备;访问控制
【英文主题词】:(MAC);(PHY);wireless;high-speed;onboardunit(OBU);roadsideunit(RSU)
【摘要】:1.1Thisspecificationdescribesamediumaccesscontrol(MAC)andphysicallayer(PHY)specificationforwirelessconnectivityusingdedicatedshort-rangecommunications(DSRC)services.ThisstandardisbasedonandreferstoIEEEStandards802.11,WirelessLANMediumAccessControlandPhysicalLayerSpecifications,and802.11a,WirelessLANMediumAccessControlandPhysicalLayerSpecificationsHigh-SpeedPhysicalLayerinthe5GHzBand,withpermissionfromtheIEEEsociety.ThisspecificationismeanttobeanextensionofIEEE802.11technologyintothehigh-speedvehicleenvironment.Aspresentedhere,thisspecificationcontainsjustenoughinformationtoexplainthedifferencebetweenIEEE802.11andIEEE802.11aoperatingparametersrequiredtoimplementamostlyhigh-speeddatatransferserviceinthe5.9-GHzIntelligentTransportationSystemsRadioService(ITS-RS)Band.PotentialoperationswithintheUnlicensedNationalInformationInfrastructure(UNII)Bandarealsoaddressed,asappropriate.1.2Purpose8212Thepurposeofthisspecificationistoprovidewirelesscommunicationsovershortdistancesbetweeninformationsourcesandtransactionsstationsontheroadsideandmobileradiounits,betweenmobileunits,andbetweenportableunitsandmobileunits.Thecommunicationsgenerallyoccuroverline-of-sightdistancesoflessthan1000mbetweenroadsideunitsandmostlyhighspeed,butoccasionallystoppedandslowmoving,vehiclesorbetweenhigh-speedvehicles.Thisspecificationalsooffersregulatorybodiesameansofstandardizingaccesstothe5.9GHzfrequencybandforthepurposeofinteroperablecommunicationstoandbetweenvehiclesatline-of-sightdistancesontheroadway.1.3Specifically,thisspecificationaccomplishesthefollowing:1.3.1DescribesthefunctionsandservicesrequiredbyaDSRCandIEEE802.11compliantdevicetooperateinahigh-speedmobileenvironment.1.3.2ReferstoIEEE802.11MACprocedures.1.3.3Definesthe5.9GHzDSRCsignalingtechniqueandinterfacefunctionsthatarecontrolledbytheIEEE802.11MAC.1.3.4PermitstheoperationofaDSRCconformantdevicewithinaDSRCcommunicationszonethatmaycoexistwithmultipleoverlappingDSRCcommunicationzones.1.3.5DescribestherequirementsandprocedurestoprovideprivacyofuserinformationbeingtransferredoverthewirelessmediumandauthenticationoftheDSRCorIEEE802.11conformantdevices.
【中国标准分类号】:M11
【国际标准分类号】:35_100_10;43_040_10
【页数】:26P.;A4
【正文语种】:


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【英文标准名称】:Charpyimpacttestonmetallicmaterials.Testmethod(V-andU-notches)
【原文标准名称】:金属材料的摆式冲击试验.第1部分:试验方法(V和U形切痕)
【标准号】:BSEN10045-1-1990
【标准状态】:作废
【国别】:英国
【发布日期】:1990-10-31
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:划痕;冲击试验;V形;尺寸;机械试验;试样;试验条件;金属;合金;摆式冲击试验;U形
【英文主题词】:notches;mechanicaltesting;alloys;charpyimpacttests;testspecimens;v-shape;u-shape;dimensions;metals;testingconditions;impacttesting
【摘要】:
【中国标准分类号】:H22
【国际标准分类号】:
【页数】:12P;A4
【正文语种】:英语


【英文标准名称】:StandardGuideforUsingtheSeismic-ReflectionMethodforShallowSubsurfaceInvestigation
【原文标准名称】:用地震反射法的浅地下勘测的标准指南
【标准号】:ASTMD7128-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:气象学;浅;反射法;地下;地质学;水文学;地震学;地球物理学
【英文主题词】:geophysics;near-surface;seismicreflection;surfacegeophysics
【摘要】:1.1PurposeandApplication1.1.1Thisguidesummarizesthetechnique,equipment,fieldprocedures,dataprocessing,andinterpretationmethodsfortheassessmentofshallowsubsurfaceconditionsusingtheseismic-reflectionmethod.1.1.2S
【中国标准分类号】:P13
【国际标准分类号】:07_060
【页数】:25P.;A4
【正文语种】: