搜索
33120081ScienceofSurveyingandMappingVol133No11Jan1:(1975-),,,,:,:E-mai:lcheny12008@yahoo1com1cn:2006-11-03DEM¹º,»(¹,610059;º,636000;»,570203)=本文选取巴中市巴州区某镇土地整理项目作为研究对象,首先利用一个典型区域的数字化等高线插值生成规则格网DEM,然后利用DEM进行土地平整土方量的计算道路和渠系的纵断面提取以及由DEM自动提取水系等由DEM进行以上信息的提取时,主要利用MapGIS软件的DTM分析模块和ArcGIS水文分析工具本文将DEM与土地整理项目有机结合,在计算精度和计算效率上比以前的方法均有所提高,但由于受原始地形图精度和软件的影响,DEM的精度尚需提高,计算方法尚需进一步的改进=DEM;土方量;路渠纵断面;水文分析=S281=A=1009-2307(2008)01-0170-03DOI:1013771/j1issn11009-23071200810110521,,,[1],:,,,(DEM)2(DEM),DigitalElevationMode,lDEMDEM(GridbasedDEM)DEM(IrregularTriangulatedNetworkbasedDEM,TINbasedDEM)DEM,TIN,[2]DEM,DEM13DEMDEM,()DEMDEM,,DEM,;;,DEM[2],,1B2000,DEM,50m@50m,,DEM20m@20m,MapGISDTM2,DEM,DEM2DEM4DEM),,,[2],,,DEM,DEM3;DEM3:411DEM,40~80%,,,[3][4][5][6]DEM,,MapGIS,DTM,341DTM,DEM,,/,,1,42,1:1m3mm3m3m31573611353311988738313487100185+2821492702701973411309623618095823132+413148,,412DEM,,,,,,,,,,,,,DEM,,5MapGISDTM,DEM,(5),(6)6()()DEM,;,,DEM,,413DEM/0,[10]DEM,,(DEM),O.CallaghanMark(1984)[7],,DEM;,,DEM,1711DEM,7DEM[8],ArcGisDesktoP9DEM(7)DEM:¹Fil,lDEM;ºFlowDirection,DEM;»FlowAccumulation,;¼Sin-gleOutputMaPAlgebra,,;½StreamtoFeature,5DEM[9]DEM88DEM,,,,,,,,,,DEM[8],DEM,5DEM,,DEM,,,DEM,DEM,DEM,DEM,,DEM,DEM,,DEM[1]1[J].11,2006,(4):48-491[2],,1[M].:,20051[3],,,1ERDAS[J].,2006,20(1)1[4]1[J].,1997,(5):23-241[5]1[M].:,20001[6]1[J].,2000,(4):64-651[7]O.Callaghan,MarkDM1Theextractionofdrainagenetworksfromdigitalelevationdata[J].ComputerVision,GraphicsandImageProcessing,1984,28:323-3441[8],,,1DEM[J].,2004,25(1):18-221[9],,,1ArcGIS910DEM[J].,2005,36(11):1-41[10]13S[J].,2006,(2):53-5456由中国科学院院士陈俊勇教授作序,中国测绘科学研究院党亚民研究员等编著的5全球导航卫星系统原理与应用6(40万字)一书由测绘出版社出版全球导航卫星系统GNSS是当前和未来科学研究的热点和重点该书对全球导航卫星系统进行了较为全面的介绍,主要内容包括卫星导航定位技术的产生发展现状以及卫星导航定位时空基准,卫星轨道,GNSS信号,GNSS静态定位原理,GNSS动态定位原理,高精度定位数据处理方法,GNSS在各个领域的应用,最后介绍了全球导航卫星系统的最新技术进展等(本刊讯)17233ResearchonapplicationsofObject-OrientedfordevelopingmetadatastandardofgeospatialinformationAbstract:ThispaperanalysesObjectcharacteristicsofgeospa-tialmetadatafirstly1Then,itpresentsadevelopinggeospatialmetada-tastandardofspecialindustryanddomainwithObjec-tOrientedmeth-od1Finally,itdesignsadetailedapproachandappliesthismethodtodevelopMetadataStandardforGeospatialInformationofWaterRe-sources,whichdemonstratesthatthemethodisfeasibleandscientific1Keywords:metadata;Objec-tOriented;geospatialinformationofwaterresourcesCUIYi-an¹,ZHOUXin-zhongº(¹SchoolofInformationSc-ienceandEngineering&Schoolofinfo-PhysicsEngineering,CentralSouthUniversity,Changsha410083;ºSchoolofRemoteSensingandInformationEngineering,WuhanUniversity,Wuhan430079)DOI:1013771/j1issn11009-2307120081011046Acomparativeresearchonquas-ilevelheightsurveyingandsubtendtrigonometriclevelingwithtotalstationAbstract:Thispaperanalyzescomparativelytheprinciple,er-rorsourcesandprecisionofquas-ilevelheightsurveyingandsubtendtrigonometricleveling,Andtheresearchresultsshowthattherangeofmeansquareerrorofsubtendtrigonometriclevelingislargerthanqua-s-ilevelheightsurveyingwithdistanceandverticalangleenlarge-ment1Measuringaccuracyofsubtendtrigonometriclevelingisgenera-llyhigherthanquas-ilevelheightsurveyingwhenthehorizontaldis-tancebetweentwoobservationpointsisnomorethan1km1Butwhenthehorizontaldistancebetweentwoobservationpointsisnolessthan1km,Measuringaccuracyofquas-ilevelheightsurveyingisgenerallyhigherthansubtendtrigonometricleveling1Keywords:subtendtrigonometricleveling;quas-ilevelheightsurveying;accuracy;comparativeanalysisWEIDong-sheng,LIXing-zhao(CentralSouthUniversityOfForestry&Technology,Changsha410004,China)DOI:1013771/j1issn11009-2307120081011047PreliminarystudyontimeseriesanalysisanditsapplicationinsurveyingandmappingAbstract:Atmieseriesisasequenceofobservationstakense-quentiallyintmie1Tmieseriesanalysisisconcernedwithtechniquesfortheanalysisoftmieseriesbehaviortoforecastfuturevaluesfromcurrentandpastvalues1Examplesoftmieseriesanalysisaboundinsuchfieldsaseconomics,business,engineering,naturalscienceandsocialscience,anditisbeingappliedinsurveyingandmapping1Inthispaper,basicconceptandcommonmodelsoftmieseriesanalysisaresummarizedanddescribedfirstly,andthentmieseriesanalysismodelconstructionsareproposedbyanalyzingofanexampleinSPSSsoftware1Thepotentialapplicationoftmieseriesanalysisinthefieldofsurveyingandmappingisalsodiscussed1Keywords:tmieseriesanalysis;modelbuilding;SPSS;ARMAWANGHong¹º,SUShan-wu¹,LIUDong-qin¹»(¹ChineseAcademyofSurveyingandMapping,Beijing100039,China;ºLia-oningTechnicalUniversity,Fuxin123000,China;»ShandongUn-iversityofScienceandtechnology,Qingdao266510,China)DOI:1013771/j1issn11009-2307120081011048TheapplicationofpopulationGISinthestudyofsocialspa-tialstructureinTianJinAbstract:AmethodthatusedtostudysocialspatialstructureofTianJinwithTianJinpopulationGISisproposedinthispaper1There-sultrevealsthattherearefourmainlyfactorswhichmipactontheformingofsocialspatialstructureofTianJin1Basedonthescoreofeacharea,theareasareclassifiedasfour:theadministeria,lfinan-cia,lcommercialandculturalareas,theindustryandresidentmixedareas,theindustryandagriculturemixedareasandtheagricu