碩士 / 國立交通大學 / 交通運輸研究所 / 89 / The technology of Web Based Geographical Information System(Web-GIS) has been developed in route navigation of mobile users. With the advance of wireless telecommunication, GIS navigation with mobile telecommunication devices has become a hot subject of research for wireless service providers. But restricted by bandwidth of wireless telecommunication, the performance of graphic process and screen display capabilities in the mobile client ends can’t meet the standard of the personal computer. Therefore, the critical problem of GIS information application in wireless telecommunication is how to reduce the amount of information flow in the transmission phase.
The main purpose of this study is to illustrate that a navigation route resulted from GIS server can be simplified then transmitted in a schematic form to the client by wireless two-way exchange. By the schematic representation and text guide of navigation route being displayed in the screen, and users can quickly find out the route in a short respond time.
The thesis studies the transformation process of the navigation route from the GIS database into a simplified schematic form and also the navigation information to a short message text. For this purpose, the complicated GIS database are re-organized and simplified, then a graphic program with J2ME is developed for the application in the PDA. With this idea, the required to transmit a navigation route information can be quickly reduced.
| Identifer | oai:union.ndltd.org:TW/089NCTU0118008 |
| Date | January 2001 |
| Creators | Chin-wei Chang, 張晉維 |
| Contributors | Chuan-Fang Wang, Jinn-Tsai Wong, 王傳芳, 汪進財 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 77 |
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