Research And Development Of Indoor Positioning Geographic Information System Based On Web

In recent years,with the rapid development of mobile communication and intelligent terminal and Internet,the maps which were used to be presented in hardcopy are rarely used in daily life.Nowadays,the complexity of the building internal structure has bought a lot of inconvenience to people's life.How to quickly and accurately find the target information has become an urgent problem to be solved.Due to the coverage of buildings,satellite based navigation has been unable to meet the requirements.This requires the establishment of indoor geographic information systems as a supplement to the public navigation system,but also can provide special areas(shipping,commercial area)of the navigation services.Based on engineering project,an indoor location geographic information system is designed in this dissertation.Using GIS tools and geographic database generate and store the indoor map and realize the function of path navigation.The main tasks in this dissertation include the following:First of all,with indoor location geographic information system for the development of rich function,realization method of indoor location geographic information system architecture and client,including indoor location geographic information system the basic function and the expansion function.This system mainly aims at realizing the specific requirements of the specific function,and gives the specific implementation plan of the indoor wireless positioning system server.Secondly,the indoor positioning system of geographic information data in specific environment without a storage method system,and indoor positioning map of traditional single function,cannot meet the needs of different users.Therefore,this dissertation designs a kind of indoor location geographic information system based on Web.Using of vector layer design,geographic database construction,map rendering and dynamic layer processing technology,to achieve a good interaction with the indoor positioning and navigation.Indoor location geographic information system is tested.Experimental results show that the system can accurately locate,and move,zoom and location information query and other operations,with good interaction.Finally,in order to meet the needs of users to navigate the path,this dissertation designs a shortest path planning algorithm.In the indoor location geographic information system,Dijkstra algorithm is used to achieve the shortest path planning.The basic idea of this dissertation is to use the method of grid coverage and the principle of adjacency graph consisting of nodes and edges.The problem of finding the shortest path between two points is transformed into the problem of seeking the solution of the computer graphics,and the speed of the algorithm is improved.Therefore,it ensures the application of the algorithm in the indoor positioning geographic information.Combined with the indoor positioning technology,users can grasp the indoor space location information in real time,so as to enhance the interaction between the user and the map.After repeated experiments and tests,it is now available.Geographic information systems can be used in more places to meet the different needs of users.