| Nowadays it becomes more and more evident that science and technology from different fields are being creatively integrated. Due to the integration of map graphic technology, GIS and IT technologies, electronic map (E-map) oriented services come out and provide an increasingly wide range of online mobile geographic information services to the public. With the development and widely use of communication technologies, E-map oriented services have been greatly promoted.However, current E-map services only provide public map service such as searching and guiding, and this service has little relation with the personal information of a target user. Therefore, how to provide a customized map services according to the information of a mobile user becomes an important work. Based on this consideration, the thesis analyzes the features of E-map services in mobile environment, and designs as well as implements the client system and an example E-map service on the mobile terminal of Nokia N800.The thesis first introduces the background knowledge of the E-map services and the client system. Then the general architecture of the E-map services and the requirements for implementing the E-map services in the client system are analyzed. Following this, the detail design and implementation of the client system and an example E-map service are emphasized. Finally, some test results are given.In addition, several optimization schemes are also provided in the thesis according to the analysis of the current system. |
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