Purpose of the research is to meet the demand of the mobile company -added services for mobile positioning and of the problem of growing demand for GPS navigation services.This article is included two parts. The first part is the management of business services. First of all, it is the discount wedding dresses introduction to the web portal for mobile positioning technology- WebGIS and the study to key technologies., has given several options for the implementation of lace wedding dresses programs. The overall system is based on the J2EE platform, and based on distributed storage server architecture, which provides the user a safe, stable, fast location of services.Secondly, the location-based services is classified on the type of business and refinement for the actual demand, the LBS services is cheap wedding gown dresses classified according to the application characteristics, the request business side, the access to the LBS business that based on the analysis of existing business. For various users with their own different types of services required for business. Personal information of the user with the security measures in the system when user identification, distinguish different user to denial of service authority according to cheap evening dresses illegal use of service function effectively, and protected the legitimate rights and the flat iron shop for us interests of users.The second part of the thesis is the study of the shortest path. First, it is the analysis of some algorithm about the study of shortest path, and compared with Floyd algorithm, Dijkstra algorithm, heuristic algorithms, two-way search algorithms. Because of the amount of data in the face of big time algorithm, time complexity of Floyd algorithm is O (n3), it does not fit the positioning system that the algorithm requirements in the response time. The heuristic which is difficult to find the optimal path from the overall, and the two-way search algorithm which would allow the two met become complex and expensive.
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Friday, April 2, 2010
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