Study On Geospatial Information Sharing Platform Key Technologies Based On ArcGIS

Spatial information sharing was first proposed for the purpose that is to adapt to the global research needs and develop to the direction of international, then mainly to establish a global data center based. With computer technology, network technology, as well as the acquisition, storage, processing and display of geospatial information in digital technology development, spatial information sharing has gone through different phases, the first original model is copying the data; the second stage is the primary model.though access to spatial database; the third stage intermediate model is service-oriented data-sharing approach; the fourth stage of advanced model is service-oriented way to share the functions. These two stages is a lot of space and high-speed Internet sources of information based on the development of the past. The main characteristics of these two stages are:easy access to a variety of services can be centralized data processing services to support a variety of standards-based client:the data published in the form of a service can ensure data security.In building service-oriented high-level shared services platform when the key technical issues involved include:1, shared database of the structural organization of the problem and extract updates.2, sharing platform security mechanisms.3, platform process necessary to solve key problems. These problems in the "Enterprise" shared services platform process are necessary to solve key technical problems. To publish ArcGIS Server as the core background and good resolution services platform release, management, and service interface calls and other issues to be managed based on ArcSDE spatial database can solve the synchronization of data updates, data management, data replication issues to GeoPortal share based portal services can be solved by search, upload, download and other issues.Firstly it explains the spatial information and sharing of research status and domestic research status, and then describes the shared platform characteristics at different stages of development, focuses on the current service-oriented relative to the prior stage to share the advantage of sharing. Finally discusses the "Enterprise GIS" based service-oriented platform for the sharing of technical problems to be solved. And full use of ArcGIS technology combined with mainstream IT technology solutions are given, the last based on ArcGIS technology and platform architecture, design and implement service-oriented sharing platform.