EN 301502-2001 全球移动通信系统用协调的EN标准.包括R&TTE指令第3.2条款中基本要求的中继设备和基站
作者:标准资料网 时间:2024-05-29 06:38:48 浏览:8404
来源:标准资料网
【英文标准名称】:HarmonizedENforGlobalSystemforMobilecommunications(GSM)-BaseStationandRepeaterequipmentcoveringessentialrequirementsunderarticle3.2oftheR&TTEdirective(GSM13.21version8.1.2Release1999)(EndorsementoftheEnglishversionEN3015
【原文标准名称】:全球移动通信系统用协调的EN标准.包括R&TTE指令第3.2条款中基本要求的中继设备和基站
【标准号】:EN301502-2001
【标准状态】:现行
【国别】:
【发布日期】:2004-03
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);电信;基站;电气工程;无线电台;设备;移动无线电通信系统;中继器;无线电工程;频带
【英文主题词】:Bandoffrequencies;Basestations;Electricalengineering;Mobileradiosystems;Plant;Radioengineering;Radiostations;Repeaters;Specification(approval);Telecommunications
【摘要】:
【中国标准分类号】:M37
【国际标准分类号】:33_070_50
【页数】:2P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforCalibrationofSystemsUsedforMeasuringVehicularResponsetoPavementRoughness
【原文标准名称】:道路粗糙度对车辆影响的测量系统的校正的标准方法
【标准号】:ASTME1448/E1448M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E17.31
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:calibration;response-typesystem;roadroughness;Calibration--pavementtestinganalysisinstrumentation;Passengercars;Responsefactors;Roadroughness
【摘要】:Measuresobtainedbyaresponse-typesystemdependprimarilyonthevehicledesignandcondition,theload,themeasuringspeed,andahostofenvironmentalconditions.Evenwithcontrolofallsignificantvariables,theresponseofeveryvehicleisunique.Thus,rawmeasuresfromsuchasystemarenotreproduciblewithothersystems.Thecalibrationdescribedinthispracticeprovidesamethodforconvertingtherawoutputofaparticularresponse-typesystemtoareproduciblestandardroughnessscale.Theresponseofavehicletoroadroughnessisacomplexphenomenonthatcannotbesummarizedinalaboratorytest.Therefore,thecalibrationismadethroughcorrelationwithstandardroughnessindexvaluesestablishedforcalibrationsitessituatedonrepresentativeroads.ThedatafromthecalibrationsitesareanalyzedtodetermineanequationtoestimatethestandardroughnessindexfromanRTSN.TheestimateofthestandardroughnessindexmadebytransforminganRTSNissubjecttothreetypesoferror:RandomErroroftheResponse-Type-System(Repeatability)8212;Thiserrorincludesoperatorerrorandvariabilityintheresponseofthevehicleandothercomponentsoftheresponse-typesystem.Itcanbereducedbyperformingrepeatedmeasurementswiththeresponse-typesystemandaveragingtheindividualmeasurementstoestimatethetrueRTSNforasite.AppendixX1describesatestmethodfordeterminingthemagnitudeofin-userepeatabilityerror.Note18212;Thelengthofthesiteorsitesusedtoestimatein-userepeatabilityshallbeequaltotheminimumlengthofthetestsectionstobesurveyedbytheresponse-typesystem.Thismayrequiretestsitesthatarelongerthanthoseprofiledforthecalibration.BiasErrorintheCalibrationEquation8212;Estimatesofthestandardroughnessindexarebiasedifthecalibrationequationisincorrectorifnocalibrationequationisused.Thepurposeofthisstandardpracticeistoreducebiastoanegligiblelevel.Ifdesired,themagnitudeofbiasremainingaftercalibrationcanbeestimatedfromdatacollectedinthecalibration.StandardErroroftheEstimate(ErrorDuetoInteractionsBetweenSiteEffectsandResponse-TypeSystemEffects)8212;Thiserrorisconstant(abias)foraparticularcombinationofresponse-typesystemandsite,butitisrandomwithsiteselection.Ultimatelyitlimitstheaccuracyoftheestimateofthestandardroughnessofasitemadewitharesponse-typesystem.Theerrorcanbeestimatedfromdatacollectedinthecalibration.Thestandarderroroftheestimateestimatestheerrorduetophysicaldifferencesinresponsebetweenaparticularresponse-typesystemandthestandardroughnessindex.Itcannotbereducedbyamathematicaltransform.Threephysicalvariablesthatarecontrollableandthatinfluencethestandarderroroftheestimatearevehicletestspeed,shockabsorberdampingstiffness,andvehicletirepressure.Formostvehicles,maximumreproducibilityofstandardroughnessindexestimatesisobtainedbyadoptingatestspeedof80km/h[50mph],byequippingthevehiclewithstiffshockabsorbers,andbymaintainingastandardtirepressure.(Seealso8.2.)Periodicverificationisessentialtoensurethatthecalibrationremainsvalid.1.1Thispracticedescribesequipmentandproceduresforthecalibrationofsystemsusedformeasuringvehicularresponsetopavementroughness.Suchsystemsarereferredtoasresponse-typesystems.(SeeTestMethodE1082.)1.2Theresponse-typesystemincl......
【中国标准分类号】:R86
【国际标准分类号】:93_080_20
【页数】:9P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 对硝基酚钠 |
| 中标分类： |
化工 >>
涂料、颜料、染料 >>
染料中间体 |
| ICS分类： |
|
| 替代情况： | 被HG/T 2586-2010代替 |
| 发布日期： | 1994-03-09 |
| 实施日期： | 1994-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2011-03-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 4页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 化工 涂料 颜料 染料 染料中间体
