Implementation And Research Of Three-dimensional Urban Planning Auxiliary Decision Support System

Digital City is developing in the whole country, providing new contents for the urban planning approval work. For urban planning, relevant departments positively explore the road of the three-dimensional urban planning approval, implement urban planning transition from two-dimensional to three-dimensional, and hope that they can find a more scientific and reasonable method for the urban planning approval work in the time of technological innovation. Three-dimensional urban planning decision support system loads and shows three-dimensional urban planning program, which provides more browse modes, applies powerful spatial analysis capabilities of3D GIS to provide analyses of urban planning for every three-dimensional plan, and provides a more rational basis for the city planning approval.Based on the three-dimensional city technology development, the essay analyzes the shortcomings of the current3D city planning approval system, and suggests the target of the system establishing. Based on this target, the essay is mainly focused on the database construction and system implementation, and specific works are as follows:(1) Research on3D city modeling technology, and compare every advantages and disadvantage of modeling techniques and project feasibility, in order to get ready for the three-dimensional data of the city building. Compare three-dimensional urban planning assisted decision support system development tools, and provide basis for the implementation of the system.(2) Simply analyze the demand of the system, focused on the process of establishing and management of system attribute data, two-dimensional data and the three-dimensional data, identify the connection mode between building model and its attribute data based on Skyline access to three-dimensional data model, and construct of the property database, model base, and two-dimensional data management library.(3) Design and Implementation of the three-dimensional urban planning decision support system. Do the designation from the perspective of software development, system architecture, functionality, workflow and interface, study Skyline development of the interface and its provided functionalities, and implement all the features of the system.