DEM在丘陵地区土地整理项目中的应用研究_陈勇

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