简介:Distribution,interoperability,interactivity,componentarefourmainfeaturesofdistributedGIS.Basedontheprincipleofhypermap,hypermediaanddistributeddatabase,thepapercomesupwithakindofdistributedspatialdatamodelwhichisinaccordancewiththosefeaturesofdistributedGIS.Themodeltakescatalogserviceastheoutlineofspatialinformationglobalization,anddefinesdatastructureofhypermapnodeindifferentlevel.Basedonthemodel,itisfeasibletomanageandprocessdistributedspatialinformation,andintegratemulti_source,heterogeneousspatialdataintoaframework.Traditionally,toretrieveandaccessspatialdataviaInternetisonlybythemeormapname.Withtheconceptofthemodel,itispossibletoretrieve,load,andlinkspatialdatabyvector_basedgraphicsontheInternet.
简介:Withrapidscientificdevelopmentandfurtherexplorationtowardsthenature,thehumankindhopestoservethemselvesbymasteringthenaturallaw.CountriesallovertheworldsetmuchvalueonthestudyofAntarcticaandhaveobtainedplentyandsubstantialachievements.SoastostrengthenmutualunderstandingamongthecountriesinAntarcticsurveyingandmappingandsharetheachievements,the'InternationalGISWorkshoponAntarcticKingGeorgeIsland',Wuhan,July6th~7th,2000wassuccessfullyheldintheLectureHalloftheNationalLaboratoryforInformationEngineeringinSurveying,MappingandRemoteSensing(LIESMARS).ItwasjointlyheldbytheNationalResearchCenteronAntarcticSurveyingandMappingandLIESMARS,andsponsoredbytheNationalPolarRegionInspectionOffice,NationalNaturalScientificFoundationCommittee,theStateBureauofSurveyingandMapping,theformerWuhanTechnicalUniversityofSurveyingandMapping.
简介:ThepresentpapersummarizesajointeffortundertakenbytheInstitutoGeográficoMilitardeChile(IGM)andtheInstitutoAntárticoChileno(INACH)inordertoobtaindigitalcartographyoftheFildesPeninsula,ReyJorgeIsland,Antarctica.ThispeninsulaconstitutestheprototypeprojectareaforthemainIGM_INACHprojectN°153“CartographicSurveyandGeographicInformationSystemoftheSouthShetlandsIslands'TheDigitalCartographywasimplementedatthe1∶5000scale,usinggeodeticGPScontrolpointsreferencedtoITRF92andWGS84Data.TheUTMProjectionwasused.AllproductswereproducedincompliancewiththecartographicstandardsoftheIGM.ThiscartographywasdesignedinordertosatisfytherequirementsofaGeographicInformationSystemdevelopedbyINACH.Thisgeo_referenceddatabaseincorporatesavarietyofthematicinformation,enablingittosupportscientificinvestigations,environmentalandmulti_disciplinarystudies,andotherapplications.AsaresultofthisprojecttheInstitutoGeográficoMilitardeChileproducedamapat1∶5000scaleindigitalformat,andalsoa1∶10000topographicmap,inpaperformat,withtwoeditions:firsteditionoftwochartsandasecondeditionwithonechartcoveringthewholeprojectarea.Chileandothercountrieshaveanumberofimportantpermanentactivitiesinthisarea.Thesemapsaredesignedtosupportseveralanddiversegeo_spatialstudiesrelatedtotheseactivities.
简介:AnimprovedtopographicdatabaseforKingGeorgeIsland,oneofthemostfrequentlyvisitedregionsinAntarctica,ispresented.AfirststepconsistedincombiningdatafromdifferentialGPSsurveysgainedduringtheaustralsummers1997~1998and1999~2000,withthecurrentcoastlinefromaSPOTsatelliteimagemosaic,topographicinformationfromexistingmapsandfromtheAntarcticDigitalDatabase.Fromthisdatasets,adigitalterrainmodel(DTM)wasgeneratedusingArc/InfoGIS.Inasecondstep,asatelliteimagemapatthescale1∶100000wasassembledfromcontourlinesderivedfromtheDTMandthesatellitemosaic.Alackofaccuratetopographicinformationintheeasternpartoftheislandwasidentified.AdditionaltopographicsurveyingorSARinterferometryshouldbeusedtoimprovethedataqualityinthatarea.TheGISintegrateddatabasewillbeindispensableforglaciologicalandclimatologicalstudiesandadministrativeandscientificpurposes.Infuture,theapplicationofGIStechniqueswillbemandatoryforenvironmentalimpactstudiesandenvironmentalmonitoringaswellasformanagementplansonKingGeorgeIsland.
简介:ABSTRACT AGISisproposedasatoolforthemanagingplanfortheAntarcticspeciallymanagedarea(ASMA)inAdmiraltyBay.TheASMAcomprisestheareaconsideredtobewithintheglacialdrainagebasinofthebay.Furthermore,itincludespartofSSSINo.8adjacenttotheareabutoutsideoftheglacialdrainagebasin.Threestationsandsixrefugesarelocatedinthearea.UsingaSPOTsatelliteimagemap,thelimitsoftheASMAaremarkedanditsareaisre_calculated.Itconsistsof362km2,including186km2islandicefieldandsmallcirqueglaciersand32km2ice_freefield.Therestcompriseswaterofthebayandasmalladjacentarea(8km2)oftheBransfieldStrait.TheASMA_GISwillconsistsof12datalayersrangingfromthephysiographicsettingstothebiologicalandadministrativefeatures.AlldatawillbeimplementedintoArc/InfoGISaccordingtothecartographicguidelinesoftheSCARWG_GGI.First,fiveplansofinformationwillberealisedusingatopographicdatabasecompiledfromvarioussourcesanddatafromtherevisedbathymetricchartpublishedbytheBrazilianNavyHydrographicSurveyandalsoincluding:1)LimitsoftheASMAandprotectedareas;2)Glaciologicalfeatures(e.g.drainagebasinlimits)and3)Humanpresence(e.g.stationsandhistoricalsites).ThesebasicGISlayerswillbeoperationalinearly2001.Then,additionaldataontheremaininglayers(e.g.hydrology,geologyandgeomorphology)willbeincludedfrompublishedsources.TheASMA_GISwillformanimportantdatabaseforenvironmentalmonitoringandstudiessurveyingtemporalchangesoffeaturessuchasglacierfrontpositionsorbirdbreadingsites.
简介:近几年来,山西省工程测绘院正朝着适应市场要求的方向发展、服务领域也在逐步拓宽,经济效益明显提高。在形势大好声中,该院居安思危,未雨绸缪,面对充满机遇和挑战的年代,要实现可持续发展,树立良好的信誉,提高综合实力成为该院工作重中之重。2001年4月院领导果断决策,导入ISO-9002质量管理体系标准,打造测绘产品质量取胜的“金钥匙”。通过几个月的全员培训,完善质量体系,2001年12月3日接受了北京世标认证中心的审核,顺利通过了IOS-9002质量体系的认证,获得合格证书。山西省工程测绘院顺利通过ISO-9002质量管理体系认证