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《地球空间信息科学学报》2002,(4)
Automaticmapnameplacementisanimportanttaskamongautomationofcartography,anditisal soachallengeincartographyandGISfield .Mapisadescriptivetoolthatusesasmallspacetorep resentalargespacesocontentsofmapoftencompeteforthemapspace .Ondensemap ,fea turesareclosel… 相似文献
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《地球空间信息科学学报》2001,4(1)
Suite 51 0JardineHouse ,1ConnaughtPlace ,Central,HongKongTel:( 852 ) 2 52 63 679Fax :( 852 ) 2 8684 61 2http:/ /www .hkis .org .hkTheHongKongInstituteofSurveyorsGeneralCouncil2 0 0 0 / 2 0 0 1OfficeBearersPresidentMrStephenLIULingHongSr.Vice_PresidentMrCHANHakJr.Vice_PresidentMrKennethCHAN… 相似文献
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数据分析和演示的空间化与地图化是当前空间信息技术发展的必然趋势。Microsoft地图是MicrosoftOffice办公自动化软件中的一个辅助应用程序 ,它为广大计算机用户提供了操作简单的专题地图制作 ,使得数据分析与空间表达相结合 ,从而让数据的表达更为直观和易于理解。一、创建基础地图在MicrosoftOffice软件中通常有两种示例基础地图 ,即世界地图和中国地图 ,显然仅有这些基础地图是不够的。为了适合用户的实际需要 ,还必须有更多基础地图。比如 ,要分析杭州市的一些统计数据 ,则必须建立杭州市的基础… 相似文献
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LUO De‘an 《地球空间信息科学学报》2001,4(3):15-20
1 IntroductionCadastralmapsandcadastralattributesarethecorecontentsofcadastralinformationmanage ment .SomeofthedevelopedcadastralmanagementsystemsemployGISsoftware (i.e .Mapinfo ,Ar cvieworMaptitudeetc .)tomanagecadastralmapsanduserelationaldatabase (e .g .SQL… 相似文献
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LIANG Yitong HU Jianglin LIU Liangming XIE Ping 《地球空间信息科学学报》2001,4(3):68-72
1 IntroductionTheidentificationofforestfire_pointsinNOAAimagesisthebasisofmonitoringforestfireusingNOAAsatellitedata .Thetraditionalapproachofi dentificationisvisualinterpretation .Bythevisualinterpretation ,betterprecisionisobtainedinprac tice,butexperie… 相似文献
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HU Qingwu XUAN Jiabin 《地球空间信息科学学报》2001,4(1):50-55
1 IntroductionWiththerapiddevelopmentofaerialandspaceremotesensingtechnique,thedigitalcamerahasbeenexplored ,andmappingexperimentswiththiskindofdigitalimagesarebeingprocessedastheregularmodeofareophotogrammetry .Ontheotherhand ,thetechniqueofintegrationo… 相似文献
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MA Hongchao LI Deren 《地球空间信息科学学报》2001,4(1)
1 IntroductionItiswellknownthatLandsatTMimagesareproba blythemostimportantremotesensingimagesforgeo logicalpurposes(Chenetal.,1 994) .Usually ,thereare7differentelectromagneticspectrumbandsinTMim ages,amongwhichthreebandscoverthevisiblerangeoftheelectromagnet… 相似文献
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HU Guorong CUI Weihong 《地球空间信息科学学报》2001,4(1):24-27
1 IntroductionThecombinedGPS/GLONASSoffersmanyad vantagescomparedwithGPS_onlyuseforposition ingapplicationsespeciallyinareaswherethenum berofvisiblesatellitesislimited .TheinclusionoftheGLONASSsignalscanincreasetheaccuracyofpositioningaswellastheavailab… 相似文献
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GUO Junyi 《地球空间信息科学学报》2001,4(3):6-8
1 IntroductionInmodernEarthrotationtheory ,threereferenceframesareusuallyused ,i.e .,thespatial (inertial)frameOξ1 ξ2 ξ3,theterrestrialframeOx1 x2 x3andthenutationframeOx01 x02 x03.Thenutationframedefinesacelestialephemerispole .Themotionofthiscelestialephemerispolew… 相似文献
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ZHANG ZuxunHU XiangyunZHANG Jianqing 《地球空间信息科学学报》2001,4(4):49-55
1 IntroductionAtpresent,manycommercialdigitalphotogram metricworkstations (DPW )havebeendevelopedandappliedintopracticalproduction .Mostofthemcanautomatically generatedigitalterrainmodel(DTM)anddigitalortho_image (DOM ) ,buttherearenotanysystemswhichcanautoma… 相似文献
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WANG Zemin 《地球空间信息科学学报》2003,6(1):74-76
Title :DiscontinuousDeformationAnalysisandRecentCrustalMovementAuthor:WANGZeminSupervisor:LIUJingnanThestudyfocusesonthewait_to_be_resolvedim portantdifficult problem—howtoanalyzeandprocessthenumerousdataofcrustalmovementgainedbyrecentmeasuringmethodsoa… 相似文献
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LI Deren LIU Liangming HU XiaoqinLI Deren Professor Academician of the Chinese Academy of Sciences Academician of the Chinese Academy of Engineering Member of the Euro_Asia International Academy of Sciences Presidential Secretariat WTUSM Luoyu Road 《地球空间信息科学学报》2000,3(3):1-13
1 DataacquisitionandmanagementFrom 1 996to 2 0 0 0 ,theStateBureauofSurvey ingandMapping (SBSM )ofChinafocusedontwomainaspects :establishingChina’snationalspatialdatainfrastructure (CNSDI)and providingbasicinformationproductionforhazardpreventionandreduction .Thepr… 相似文献
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APPROXIMATE REPRESENTATION OF THE p-NORM DISTRIBUTION 总被引:1,自引:0,他引:1
SUN Haiyan 《地球空间信息科学学报》2001,4(3)
1 IntroductionInsurveyingdataprocessing ,itisoftensupposedthatobservationalerrorsdistributenormally .Ifob servationscomefromthenormaldistributionalclass ,themethodofleastsquarescangivethemini_ProjectsupportedbytheSustentationPlanforOutstandingTeachersofA… 相似文献
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1 IntroductionMapgeneralizationisoneoftheclassicalcartographicprob lems.Allmaps,aregeneralizedrepresentationsofthereality.Generalizationisnecessarytoimprovethedisplayqualityofsmallscalemaps,allowanalysiswithdifferentgradesofdetail;andreducedatastoragere… 相似文献
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1 IntroductionTherapiddevelopmentoftheeconomyandthesocietyre quiresthesuitablethree_dimentionalrepresentationfordis tricts ,statesandtheearth .Thedigitalelevationmodel (DEM)andgeoreferencedremotesensingimageswith 1_meterresolu tionarethebase .Recently ,themo… 相似文献
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DENG MinLI ChengmingLIU Wenbao 《地球空间信息科学学报》2001,4(4):43-48
1 IntroductionSpatialrelationsqueryisoneofbasicfunctionsinGIS’sapplication .MostofcurrentcommercialGISscanonlyqueryspatialrelationsforspatialob jectswithoutanyerrororuncertainty ,forexample ,tousecomputation geometryalgorithmtodeter minewhetherapointfalls… 相似文献
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XIAO Lebin ZHONG Ershun LIU Jiyuan SONG Guanfuassociate researcher Institute of Geographic Sciences Natural Resources Chinese Academy of Sciences Datun Road Anwai Beijing China. 《地球空间信息科学学报》2002,5(3):19-25
1 TwotypicalGISdatamodels1 .1 TopologicalrelationdatamodelCommercialGISsoftwareintheearlyagemostlyusestheda tamodelbasedon“node—arc—polygon”topologicalrelation,whichiscalledtopologicalrelationdatamodel.Onthebasisoftopologicaldatamodel,somesoftwarestoress… 相似文献