In recent years, GIS has been widely attached importance to the world, especially in early 1998, the US Vice President Gore is the new concept of "Digital Earth-awareness 21st Century Our Planet" in the California Science Center, set off in the world. "Digital Genol", making the core technology GIS more attention to governments. During the "Ninth Five-Year Plan", the two major events of my country's Science and Technology Department in high-tech areas, one is CAD / CIMS, another thing is GIS. Since 1996, GIS quickly came out from the laboratory of the school and research institutes, and it was also increasing for the application. Some small and medium-sized GIS software products are close to the international advanced level, even some performance indicators exceeded foreign excellent software, have been applied to actual projects. The recent sample survey results show that my country's GIS software has accounted for 28.9% of all types of software in all kinds of software, and more and more application units have begun to list the preferred objectives of my country's GIS software as an engineering implementation. The proportion is close to 50%. It can be seen that my country's GIS software has a good momentum. The role of GIS GIS in urban informationization in urban information construction can be embodied in urban construction, urban control, urban development, urban management and other aspects. City Construction GIS can provide a visual information source for digital urban construction. Urban construction often returns a large number of urban construction, construction itself needs to be planned, and planning is to take into account all pipe network issues, such as water pipe network, circuit pipe network, gas pipe network, etc., because all pipe networks are underground, The pipe network laying information is often stored in physical media, and there is no association between each other. If the planned designer is required to consider, it is often difficult to avoid, and it is also difficult to say when it is planned. If you use GIS, you can solve these problems more easily. Urban Control In the process of urban control, it will encounter various emergencies and problems. Solve strategies often involve the rigid personnel and the reasonable arrangements of corresponding resources, and if necessary, it is necessary to implement the implementation route, such as the arrangement of fire teams to the fire. The route is also very important. In fact, urban control issues are an optimized scheduling issue, but the category of urban control is wider, and the corresponding complexity is also greater relative to optimization scheduling in the computer field. To achieve perfect power scheduling, power schedule, defense adjustment, etc., you need a lot of dynamic, real-time data, and optimize these dynamic resources. This is unable to use a traditional way. Urban development a city must prosper and require a large number of industrial and commercial support, and with the gradual in-depth of digitization, e-commerce and electronic business have also entered the actual slogan. However, there are too many problems involved in e-commerce and electronic services, not only including business, business itself, but also related logistics, distribution and other issues, and this is often the biggest obstacle during specific implementation, is also a key issue . If you integrate a variety of information management systems GPS (Global Positioning System) on the basis of GIS, the physical (reality) world can be combined, properly solve the problem. Urban management urban management includes urban users with water, electricity, gas, and management, to do remote meter reading, automatic billing, electronic settlement, therefore requires corresponding tap water water supply information system, urban natural gas pipe network information system, telecom comprehensive management The system, and these systems must be based on GIS.
The latest development trend is worth noting that China's GIS industry is currently in its infancy, with the advancement of industrialization, exposing a lot of problems, seriously hindering the healthy and orderly development of the GIS industry, the country will build a Engineering (Digital China Project), improve two systems (state-to-earth observation system and national space information technology application system), develop three industries (space data service industry, space information software industry, spatial information application industry) to carry out future space Work in the field of information technology. In GIS, develop industry-based goals, from strengthening promotion applications, realizing traditional industry transformation, development of key technologies research, research, application demonstration project, promoting GIS in resource environment, urban construction, electricity, communication, transportation, agriculture, etc. The application of the "digital Earth" in order to establish China's "Digital Earth", the basis, software foundation and application basis. The GIS specific development goal is to develop a full range of GIS software products with independent copyright, including basic software and application development platform software, especially large GIS software products under development network environment; establish a national GIS technical training system and promotion application network Development of large GIS application demonstration projects. From a technical point of view, the development direction of GIS is manifested as: system interoperability, system modularity, system polymerization system intelligent, platform networkization and application socialization. System interoperability GIS interoperability also refers to data standardization, and the corresponding interoperable geographic information system can be understood as the GIS system integrated platform, which implements multiple geographic information systems and their application systems between multiple environments and their application systems. Communication and collaboration to complete a particular task. Data, multidimensional GIS data is only to modern demands, and multi-dimensional is generally reflected in three-dimensional. The current research focuses on the design, optimization and implementation of the three-dimensional data structure, and the application of visual technology, three-dimensional system function and module. Design and other aspects. System modular modular GIS is a geographic information system for object-oriented and component technology. It divides GIS's functional modules into multiple controls. Each control completes different functions, integrated with visual software development tools, forming the ultimate GIS application. System intelligence provides decision support services to be an embodiment of intelligence of GIS system, and this is especially important. The current research focus is how to combine research in decision support fields with GIS. Platform Networking WWW Geographic Information System is to use Internet technology to publish space information on the Web for users to browse and use. It can be divided into four parts: clients, information agents, servers, and editors. The network-oriented GIS is based on computer technology, modern communication, network technology, virtual reality technology, which can construct a new type of space for social interaction and communication. The application of social application socialization refers to the development of digital cities in digital Earth, and the development of the corresponding GIS system is also facing socialization. The core Xixiang of digital earth is uniformly handled with digital means and maximizes the use of information resources. In fact, digital globes can also be understood as the extension of GIS, and the core technologies of establishing digital earth include GIS and digital libraries, remote sensing, telemetry, information technology. City GIS application and realizing urban geographic information system is a comprehensive system involving many aspects of computer technology, system engineering, urban surveying, urban planning, statistical and analysis. It can not only replace the city map, becoming a guide for people to take the road; more importantly, using statistical analysis capabilities, decision makers at all levels can quickly obtain the required urban geographic information and related economic attribute information, help decision makers Urban planning, demographics, corporate site selection and other decision-making activities, to improve the scientific and effectiveness of decision-making, enhance the competitive advantage of enterprises.
