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Computer Engineering ›› 2011, Vol. 37 ›› Issue (9): 273-275. doi: 10.3969/j.issn.1000-3428.2011.09.095

• Networks and Communications • Previous Articles     Next Articles

Organization and Transmission Method Research of Graphic Document in Location Based Service

XU Cai-fu, LIU Hou-quan, XIE Jing, HAN Chen-shou   

  1. (School of Computer, China University of Mining and Technology, Xuzhou 221116, China)
  • Online:2011-05-05 Published:2011-05-12

LBS图形文件组织与传输方法研究

徐财福,刘厚泉,谢 婧,韩陈寿   

  1. (中国矿业大学计算机学院,江苏 徐州 221116)
  • 作者简介:徐财福(1985-),男,硕士研究生,主研方向:图形文件处理,地理信息系统;刘厚泉,教授、博士;谢 婧,工程师; 韩陈寿,硕士研究生

Abstract: For the problem of geospatial data expression in the mobile-side and transmission between server and client, this paper summarizes the advantages of Scalable Vector Graphic(SVG) used in Location Based Service(LBS), puts forward SVG five-layer structure organization model with grade block model, and the methods based on the five-layer model of on-demand transmission. Experimental results prove that this system can suit to the client hardware environment, and effectively reduce the bandwidth requirements of wireless networks.

Key words: Location Based Service(LBS), Scalable Vector Graphic(SVG), mobile navigation system, five-layer model, J2ME

摘要: 根据基于位置的服务(LBS)系统中移动端地理空间数据的表达以及空间信息传输要求,分析可升级矢量图形(SVG)应用于LBS的优势,结合分级分块模型,提出SVG的五层结构组织模型,基于该模型实现空间数据的按需传输方法。实验结果证明,该系统能较好地适应客户端低内存弱处理能力的硬件环境,有效降低对无线网络带宽的要求。

关键词: 基于位置的服务, 可升级矢量图形, 移动导航系统, 五层结构模型, Java2微型版

CLC Number: