Research On GIS Process Modeling And Integration

The rapid development of the modern computer technology especially that of the software technology , provide the effective resolution for all the computer application problem. It takes great effort for the GIS Software to keep up with the development of major IT Technology. Though the GIS software has made many significant process until now, due to the complexity of the relationship between the spatial data and the spatial entity, and the limitation of the GIS design method and the structure, considerable part of the modern software technology still can not be used in the GIS software effectively, which result in the unsatisfied resolution or no-resolution of the application of spatial information. With the rapid development of the IT technology and the spatial data acquisition and the vigorous requirement of GIS application, It is a rather critical thing to find a rational resolution for the problem exists in the design method and structure of GIS software.With the increment of the complexity of function and structure, the intrinsic limitation of the traditional design mode of integrated structure and centralized control becomes more and more distinct. With the development trends of application mode of the future software , The design of GIS is bound to have a tendency of network , individual and intelligent mode. There is a natural trend to merge the GIS and other computer information system together, which includes the share of. information > function co-operation and process integration.Process modeling is one of the important research direction of current software engineering, which is widely applied in the software engineering and enterprise process engineering. With the support of the software tools , it define the software process , simulate the running of process and realize the accurate management, control and improvement of process. The start point of the paper is the realization of the integration of the distributed GIS application based on process modeling technology, thus provide an integrated resolution and software engineering platform for the applications such as spatial issue process , spatial decision support and simulation of spatial dynamic process.The paper analyze the process essence of GIS application, make a systematic study of the concept and category of GIS process modeling , discuss the relevant technology of GIS process modeling system, provide a resolution for the application integration and system integration based on distributed network GIS in the view of the process modeling , process integration. The contents include:1. The paper discuss the concept of process .. the construction method of process modeling > the process characteristic of GIS .. the concept structure % characteristic function requirement and relevant technology of GIS process modeling system.2. The paper discuss the geographic time-spatial concept of process modeling â– > the current study status and the problem of spatial data modek the variety of the spatial data category etc. Based on the spatial system theory, the paper issue the GPMS system thought in which spatial data model describe the spatial structure ^ GIS process model describe the spatial movement, design a time-spatial object data model which is applicable in the description of geographic information process model based on frame, and discuss the spatial express and treatment of spatial object.3. The paper make a study of the characteristic of GIS process modeling , compare the current modeling method of workflow process, issue the GIS process model based on workflow. The model describe the logical express of the information flow and control flow in the dynamic process and the static structure of process model., design the data integration and realization of data flow based on the info-rack.4. The paper make a study of system realization of process modeling based on distributed technology > the design of distributed work flow mechanism ^ the design of interface and the data co-operation in the distributed GIS application system ^ the function co-operation and the integration method of GIS and application analysis model . The paper discuss the development of software process engineering > the development of application software based on GPMS and the thought of the construction of the integration environment for GIS process engineering based on GPMS.5. With the practice of the application of enterprise operation-flow automation software -. the development of the land house information management system and the agriculture Geographic information system , the paper prove the relevant theory and method of process modeling.