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1.
1 IntroductionAttheNiukouyucrustaldeformationstation ,shortdistancelevelingoveradistanceof 2 4miscarriedoutacrossageologicalfaultinordertomon itorfaultmovement.Theultimateaimofthemea surementsistodevelopmethodsfor predictingearthquakes.Niukouyucrustaldefor…  相似文献   

2.
1 IntroductionThestudyoflongdistancetransferenceofheightdatumacrossseashaswidelyattractedtheattentionsofthegeode sistsinoceaniccountriesforalongtime .Generally,therearefourmethodsintheheighttransferring :hydrostaticleveling ,dy namicleveling ,GPS/levelinga…  相似文献   

3.
1 IntroductionCurrently ,therealreadyexistseveralalgorithmsforthegenerationofdifferentialcorrections,forin stance ,thealgorithmbasedoncarrierfilteredcodeobservations (vanDierendonck ,1 993 ;Landau ,1 993 )andthealgorithmbasedoncodeobservationsandsequentialdiffere…  相似文献   

4.
《地图》1994,(3)
英语之角(9)SymbolizationRepresentingacitywithasmallcircleisageneralization,sincefewurbanareashavecircularboundaries;thenmanycitie...  相似文献   

5.
《地图》1994,(2)
英语之角(8)ScaleandGeneralization(2)Linesonamapmustoftenbesmoothedforthesakeofclarity.Wheretheterrainisrugged,highwaysdepictedona...  相似文献   

6.
《地图》1995,(2)
英语之角(11)3.RemotesensingandcartographyTwokindsofmapscanbeptoducedfromsatellitedata,satelliteimagemapsandthematicmaps.Satellite...  相似文献   

7.
PresentStatusandPerspectivesofRemoteSensingofVegetationJuhanRos(TartuObservatory,EE2444Toravere,Tartu,Estonia)Duringtherecent...  相似文献   

8.
1 IntroductionThecombinedGPS/GLONASSoffersmanyad vantagescomparedwithGPS_onlyuseforposition ingapplicationsespeciallyinareaswherethenum berofvisiblesatellitesislimited .TheinclusionoftheGLONASSsignalscanincreasetheaccuracyofpositioningaswellastheavailab…  相似文献   

9.
1 TheconceptoftheintegrationofRSwithGISTheintegrationofremotesensing (RS)withgeo graphicalinformationsystem (GIS)isahotspotingeographicalinformationscience .TheconceptoftheintegrationofRSwithGIS ,intheviewofProf.LiDeren ,isthatRSisthewaytoobtaintheinforma ti…  相似文献   

10.
1 IntroductionSpatialdataisthebasisoftheGeographicInfor mationSystem (GIS)andnon_spatialdataistheintensionandthedescriptionofgeographiccell.Thequalityofdataaffectsgreatlyontheresultofapplicationanalysisandtherealizationoftheprac ticaltargetinGIS .Thequal…  相似文献   

11.
1 IntroductionSpatialrelationsqueryisoneofbasicfunctionsinGIS’sapplication .MostofcurrentcommercialGISscanonlyqueryspatialrelationsforspatialob jectswithoutanyerrororuncertainty ,forexample ,tousecomputation geometryalgorithmtodeter minewhetherapointfalls…  相似文献   

12.
1 DataacquisitionandmanagementFrom 1 996to 2 0 0 0 ,theStateBureauofSurvey ingandMapping (SBSM )ofChinafocusedontwomainaspects :establishingChina’snationalspatialdatainfrastructure (CNSDI)and providingbasicinformationproductionforhazardpreventionandreduction .Thepr…  相似文献   

13.
A CADASTRAL SPATIAL DATA STORAGE STRUCTURE BASED ON RELATIONAL DATABASE   总被引:3,自引:0,他引:3  
1 IntroductionCadastralmapsandcadastralattributesarethecorecontentsofcadastralinformationmanage ment .SomeofthedevelopedcadastralmanagementsystemsemployGISsoftware (i.e .Mapinfo ,Ar cvieworMaptitudeetc .)tomanagecadastralmapsanduserelationaldatabase (e .g .SQL…  相似文献   

14.
1 IntroductionTheWorkingGrouponGeodesyandGeographicInformation (WG_GGI)oftheScientificCommit teeonAntarcticResearch (SCAR )launchedtheprojectKingGeorgeIslandGIS (KGIS) .Inordertoprovideanoperationalsystem ,adatamodel,dataaccuracystandardsandadatainventoryhav…  相似文献   

15.
分析了测绘学包括其主要子学科的发展,讨论了Geomatics的基本学科如GIS、RS、GPS的应用与基本理论。通过相应比较得出结论,测绘学在信息时代的发展就是Geomatics。讨论了一些有关测绘学科的新名称。从学科所应具备的知识角度出发,认为“空间信息学(SpaticalInformatics)”或“空间信息工程(SpatialIn-formationEngineering)”能够体现测绘学未来发展的特征。  相似文献   

16.
Development of a hybrid model for three-dimensional GIS   总被引:10,自引:0,他引:10  
1 IntroductionThree_dimensional (3_D)GeographicalInforma tionSystems (GISs)areveryimportantfortheap plicationfieldssuchasurbanplanningandmanage ment ,geologicalsubsurfacemodeling ,miningandoilexploration .Ina 3_DGIS ,anobjectcanbede scribedinhorizontal (x ,y)andv…  相似文献   

17.
t-GIS and environmental dynamic models   总被引:2,自引:0,他引:2  
1 IntroductionTodayitseemsthatpeople’sinterestandatten tiontoGISmainlyfocusontheaspectofspatialat tributesofgeographicinformation ,notsufficientlyontimefactor .Thisisanerroneoustendency ,anditwillbedisadvantageoustothebalanceddevelop mentofGISwhenexplaini…  相似文献   

18.
1 IntroductionTherepresentationofspatialobjectsisoneofthekeyissuesincurrentresearchonthespatialdatabasetheoryofGIS (BurroughandMcDonnell,1 998) .Spatialobjectsinnatureareclassifiedastwokinds:objectswithdistinctiveboundariesandob jectswithtransitionalorfuzzy…  相似文献   

19.
1 .GeomaticsandInformationScienceofWuhanUniversity(Bimonthly) ,anacademicperiodicaloriginatedfromJournalofWuhanTechnicalUniversityofSurveyingandMapping ,aimsatextendingin ternationalacademicexchangesofadvancedresearchresultsinsurveyingandmapping .Itcoverst…  相似文献   

20.
1 IntroductionAgeographicinformationsystem (GIS)isusedtocollect,display ,analyseandmanagegeographicallyrelatedinformation .Itisanimportanttooltointe gratespatialdataacquiredatdifferentscales,timesandformats.GISisameansof1 )exchanginginformationbetweencountr…  相似文献   

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