J2me-based Vector Map Browser Research And Development

GIS(Geographical Information System)is a strategy supporting system, havingall the features of information system.The main difference between GIS and otherinformation systems is that the information which GIS stores and deals with isthrough coding, the geographic location and the attributes information of GISconcerned contributes to the significant aspects of information search.Reality world is conbined with a series of geographic conceptions andphenomena; these geographic features consist of at least two parts: spatial locationreference information and non-location information. GIS is an innovativeinterdisciplinary science; it is the theory and the method describing, storing, analysingand outputting spatial information. Meanwhile, GIS is a computer technology systemwhich serves geography research and strategy service. Based on geospatial database,the system, with a method of geographic model analysis, provides valuable spatial anddynamic geographic information.Location based service (LBS) is a new profitable business recently. Customersare able to gain the location of people, guided navigation, the latest information ofsurrounding environment, and bus route information, etc. Industries users are able tolaunch various supervision and management businesses via LBS.This paper introduces the design and achievement of an innovative vector mapbrowser. After a deep analysis of GIS, spatial data management, and the features ofvector map, the paper mainly presents a procedure to successfully transfer vector mapdata to the cell phone client's screen and make them interact with GIS backgroundserver by utilizing J2ME (Java 2 Micro Edition) technology of Sun Company andHTTP/XML protocols.This paper mainly describes how to design and realize a vector map browser,which is based on the J2ME, and make a successful illustration. There are six chaptersin all. In Charter One the contents and targets of this research is overviewed; then inChapter Two, GIS is outlined and introduces the organization of Spatial Data; ChapterThree shows the J2ME application development technology; Chapter Four andChapter Five separately expound the vector map browser's design and achievement indetails. Finally, Chapter Six summarises the whole work.