Policy support, technological innovation, market expansion, enterprise maturity and education follow-up have provided countless opportunities for the development of our geographic information industry. However, in the fierce international competition, we still face many difficulties and challenges, mainly in the following aspects: in terms of remote sensing data, more than 90% of the satellite remote sensing data currently used in China come from the United States, France and Canada.
Waiting for the country. The data of high spatial resolution and hyperspectral satellites and all-weather radar satellites are still blank in China. Promote technological innovation
The ability to promote the transformation of technological achievements has become very urgent. In addition, the imperfection of basic data also affects the geography of China.
Important restrictive factors for the development of information industry. Geographic information includes basic geographic information database, geospatial information framework database, comprehensive information database and industry thematic information database. In the information society, geographic information services are diversified, and many subsystems can be derived from these databases, such as government-oriented e-government system, people-oriented public service system, special application systems such as forestry and tourism, and GPS navigation and positioning system in location based service.
However, despite the large market space of these systems, there are still some problems to be solved urgently in China's geographic information industry due to insufficient development and utilization of information resources, imperfect sharing mechanism and low degree of socialization of information services.
The disunity and nonstandard map standards sometimes make people laugh and cry. For example, when you are driving normally on the highway, GPS sends out an error message, prompting you to walk in the river; To make matters worse, if the map website reports the wrong location, you may have to run dozens of kilometers more. What's more, a bridge was built between the two counties, and the construction units in both counties built it according to their own drawings. As a result, the bridge could not be closed because of the different map coordinate systems used, and the loss was huge.
As far as urban construction is concerned, urban construction needs to establish a one-stop service and management system from project site selection, land allocation, planning scheme approval, building scheme audit, red line lofting, construction site management, completion acceptance and real estate management. However, the whole process involves many departments, and each department chooses its own drawings and acts in its own way. This kind of information isolation will inevitably lead to the disconnection of management and repeated investment in information construction.
In addition to the lack of overall coordination and supervision, the direct causes of this situation are weak infrastructure, weak independent guarantee ability of information resources, imperfect policies, regulations, standards and standards and imperfect security system. At present, there is a growing call from all walks of life for accelerating the establishment of a unified geographic information public service platform, eliminating information islands and promoting industrial development. The construction of geographic information public service platform needs a high degree of integration of policy, data, application and technology, and a series of problems such as geographic information collection, processing, storage, management, update, release and service need to be solved urgently. The construction of geographic information public service platform should be based on government network, private network and internet, combined with e-government, and provide comprehensive and multi-level basic geographic information services for policy management, industry application and the public within the scope of confidentiality of surveying and mapping results and professional information.
First of all, we must achieve technical unity. Experts believe that the most important issue in the construction of geographic information public platform is the standard. The integration of geographic information should be based on surveying and mapping departments and completed through cooperation with relevant departments of various industries. The premise is to unify the standards, so as to write the corresponding * * * sharing exchange software and realize the sharing exchange with various databases. At the same time, it is necessary to establish a geospatial information sharing platform under the network environment to realize the rapid and real-time sharing of distributed databases. Each department dynamically maintains the geo-spatial information produced by itself, thus updating and maintaining all the spatial information.
With the establishment of * * * sharing mechanism, the social service ability of geospatial information will be significantly improved, such as map navigation, digital marketing, online maps, digital blocks and so on. The purpose of geographic information production is to better serve the society. These new technology industries have also caused many changes in the surveying and mapping market, from the production market to the service market, from repeated geographic information production to geographic information mining, from simple geographic information sales to high-tech geographic information services. In view of the contradiction between the serious shortage of information resources and the insufficient utilization of existing information, relevant experts pointed out that it is necessary to realize the integration, unified platform, unified database building and unified management of existing data resources and application systems as soon as possible, realize the integration and * * * sharing of internal information, provide comprehensive services from outside, and truly build a framework system of geographic information public * * * service platform including spatial information basic data.
At the same time, the popularization and application of geographic information public service platform needs two-way efforts from top to bottom and bottom to top. First, top-down policy coordination and support; The second is bottom-up marketing, actively communicating with various industries and departments, and applying geographic information to digital industry, digital community and government information management through industry and regional pilot projects to promote geographic information to realize * * * knowledge in * * * buildings. Geographic information comes from different standards of different departments, and the current situation of mixed map products will soon be solved. By 20 10, China will basically build a digital China geospatial framework data system. The State Bureau of Surveying and Mapping has successively signed basic geographic information sharing agreements with the Ministry of Communications, the Ministry of Civil Affairs and the State Environmental Protection Administration to further promote the wide application of basic geographic information. In terms of database construction standards, the national small-scale geospatial database standards have been formed. The lag of GIS standardization and the inadaptability of GIS education and industrial development are all things that we need to face actively and try our best to deal with.