基于Mobile SVG/JAVA的移动GIS研究
摘要
近些年来,计算机、移动通信、网络技术的发展,为传统的GIS带来了新的发展契机。传统的GIS从基于桌面PC的单机GIS系统发展到基于客户服务器的网络GIS。目前,GIS正朝着新的发展趋势一移动GIS迈进。
移动GIS集地理信息科学、计算机科学、移动通信技术和网络技术于一体,是GIS发展的主要方向之一。设计移动GIS系统满足移动用户的需求已经成为一个新的研究课题。本文针对已有的象素位图表达地图的移动GIS系统的诸多缺点,提出将Mobile SVG规范应用到地图的表达,并借助J2ME、J2EE、XML技术设计与实现了移动GIS的新的开发框架模式,其主要工作和成果如下:
● 研究了利用Mobile SVG规范中对象元素表达地图,以适应移动GIS客户端的需要。
● 为了提高异构空间数据的融合、系统可移植性的需要,研究了基于XML的地理空间数据表达及其传输技术。
● 研究了利用成熟的JAVA技术、XML技术设计移动GIS的开发框架。
● 结合J2EE技术设计服务器端系统总体框架的优势,分析设计了基于J2EE技术的系统总体框架。
● 客户端设计了适合支持JAVA手机终端的客户端系统框架。
● 按照服务器端系统框架,设计实现了相应的逻辑功能组件,满足客户端的空间分析请求。
● 按照客户端系统框架,设计实现了客户端相应的逻辑功能。
● 通过实验结果表明利用Java/Mobile SVG开发移动系统同传统的移动GIS系统相比具有以下优势:
● Mobile SVG表达的空间地图较基于象素的地图占有的数据量小;
● Mobile SVG表达的地图进行缩放操作时不存在失真现象;
● 基于XML的空间数据表达,有利于空间数据的交换;
● 基于企业级的多层体系结构,具有系统稳定、可移植等多方面的优势;
● 基于Mobile SVG的客户端解决方案,有利于解决客户端与服务器端的负载平衡问题。
In recent years, the development of the computer, the mobile communication and the network technology brought the recent development turning point for traditional GIS. Traditional GIS has developed from single plane GIS system of tabletop PC to Web GIS based on client and server, and now GIS is stepping towards Mobile GIS.Mobile GIS collects methods of geography information science, the computer science, the mobile communication technology and the network technology, and it is one of main directions of GIS. Designing mobile GIS system to satisfy the demands of the mobile clients has become a new research topic. In order to solve the problem of mobile GIS based on pels bitmap's expressing map, the standard of Mobile SVG is applied to the map expression. In this paper, J2ME, J2EE and the XML technologies are used to realize a new framework of Mobile GIS. The principal content and achievement in this article is as follows:How to utilize object element in the standard of Mobile SVG to express map is studied to satisfy the needs of the client side of Mobile GIS.In order to enhance the fusion of different space data, and satisfy the system's transplant, geography space data expression based on the XML and its transmission technology are studied.The mature JAVA technology, XML technology are used to design a developing frame of Mobile GIS.The system's total frame is designed, which has the superiority of the J2EE in server side.At the client side, the system frame of client side is designed to support the JAVA handset terminal.According to the server terminal system frame, the corresponding logical function components are designed to satisfy the spatial analysis request at the client side.According to the client system frame, the corresponding logical
function components are designed at the client side. Compared to the traditional mobile GIS, the experimental result has indicated that the Mobile system which is designed by Java/ Mobile SVG has the superiorities as follows:? Compared to the map of pels, the spatial map expressed by Mobile SVG has smaller data.? The map expressed by Mobile SVG does not have distortion phenomenon during the zoom operation.? the spatial data expression based on XML has the superiority of spatial data's exchange.? The enterprise multilayered system structure has the superiority of system stability and transplant.? The client side solution based on the Mobile SVG can solve the load balance problem between the client side and the server side.
移动GIS集地理信息科学、计算机科学、移动通信技术和网络技术于一体,是GIS发展的主要方向之一。设计移动GIS系统满足移动用户的需求已经成为一个新的研究课题。本文针对已有的象素位图表达地图的移动GIS系统的诸多缺点,提出将Mobile SVG规范应用到地图的表达,并借助J2ME、J2EE、XML技术设计与实现了移动GIS的新的开发框架模式,其主要工作和成果如下:
● 研究了利用Mobile SVG规范中对象元素表达地图,以适应移动GIS客户端的需要。
● 为了提高异构空间数据的融合、系统可移植性的需要,研究了基于XML的地理空间数据表达及其传输技术。
● 研究了利用成熟的JAVA技术、XML技术设计移动GIS的开发框架。
● 结合J2EE技术设计服务器端系统总体框架的优势,分析设计了基于J2EE技术的系统总体框架。
● 客户端设计了适合支持JAVA手机终端的客户端系统框架。
● 按照服务器端系统框架,设计实现了相应的逻辑功能组件,满足客户端的空间分析请求。
● 按照客户端系统框架,设计实现了客户端相应的逻辑功能。
● 通过实验结果表明利用Java/Mobile SVG开发移动系统同传统的移动GIS系统相比具有以下优势:
● Mobile SVG表达的空间地图较基于象素的地图占有的数据量小;
● Mobile SVG表达的地图进行缩放操作时不存在失真现象;
● 基于XML的空间数据表达,有利于空间数据的交换;
● 基于企业级的多层体系结构,具有系统稳定、可移植等多方面的优势;
● 基于Mobile SVG的客户端解决方案,有利于解决客户端与服务器端的负载平衡问题。
In recent years, the development of the computer, the mobile communication and the network technology brought the recent development turning point for traditional GIS. Traditional GIS has developed from single plane GIS system of tabletop PC to Web GIS based on client and server, and now GIS is stepping towards Mobile GIS.Mobile GIS collects methods of geography information science, the computer science, the mobile communication technology and the network technology, and it is one of main directions of GIS. Designing mobile GIS system to satisfy the demands of the mobile clients has become a new research topic. In order to solve the problem of mobile GIS based on pels bitmap's expressing map, the standard of Mobile SVG is applied to the map expression. In this paper, J2ME, J2EE and the XML technologies are used to realize a new framework of Mobile GIS. The principal content and achievement in this article is as follows:How to utilize object element in the standard of Mobile SVG to express map is studied to satisfy the needs of the client side of Mobile GIS.In order to enhance the fusion of different space data, and satisfy the system's transplant, geography space data expression based on the XML and its transmission technology are studied.The mature JAVA technology, XML technology are used to design a developing frame of Mobile GIS.The system's total frame is designed, which has the superiority of the J2EE in server side.At the client side, the system frame of client side is designed to support the JAVA handset terminal.According to the server terminal system frame, the corresponding logical function components are designed to satisfy the spatial analysis request at the client side.According to the client system frame, the corresponding logical
function components are designed at the client side. Compared to the traditional mobile GIS, the experimental result has indicated that the Mobile system which is designed by Java/ Mobile SVG has the superiorities as follows:? Compared to the map of pels, the spatial map expressed by Mobile SVG has smaller data.? The map expressed by Mobile SVG does not have distortion phenomenon during the zoom operation.? the spatial data expression based on XML has the superiority of spatial data's exchange.? The enterprise multilayered system structure has the superiority of system stability and transplant.? The client side solution based on the Mobile SVG can solve the load balance problem between the client side and the server side.
引文
[1] 李清泉,谢智颖,左小清等,基于SVG的空间信息描述与可视化表达[J],测绘学报,2005,34(1):58～62.
[2] 徐云和,谢刚生,程朋跟等,基于SVG的空间数据可视化[J],计算机应用研究,2005,46～50.
[3] 段英杰,基于SVG的网络地图浏览器的设计与实现,学位论文,2004.
[4] 陈勇,基于XML的地图网络发布技术的研究,学位论文,2004.
[5] 王冲,李清泉,陈珉,基于J2me平台的SVG应用组件的设计[J],武汉大学学报,2003,28(1).
[6] AndView,TinyLine For MIDP SDK, Http://www.tinyline.com.
[7] Http://www.apache.org, 2005.
[8] 龙中花,基于嵌入式linux平台Mobile SVG浏览器的设计与实现,学位论文,2004,3.
[9] SVG1. lspecification, SVG workinggroup, http://www.w3.org/TR/SVG11/, 2001.
[10] SVGTiny1.2 specification, SYG working group http://www.w3.org, 2005.
[11] Ikivo the Mobile SVG Company. Mobile SVG:The Graphics Wave of the Future, 2005
[12] Jeff Weder, Mobile SVG, Texas Instruments, Feruary 2003.
[13] 飞思科技研发中心.JavaWeb服务应用开发祥解.北京:电子工业出版社,2002。
[14] IVOR HORTON,JAVA 2编程指南,北京:电子工业出版社,2003.
[15] 王勇,基于Java技术的移动目标定位系统的研究,学位论文,2004.
[16] 梅贤昌,基于J2BB的LBS系统的设计与实现,学位论文,2004.
[17] 张勇,基于J2ME的SVG组件设计,学位论文,2004.
[18] 张磊,J2ME环境下开发移动web服务的研究,学位论文,2003.
[19] 罗奕,基于J2ME和Web Services技术的手机应用程序研究与开发,学位 论文,2004.
[20] 郑华,基于XML和JAVA的异构数据库集成中间件系统的研究和实现,学位论文,2004
[21] 王浩波,基于JAVA和XML信息系统集成研究,学位论文,2004.
[22] 王平,基于XML的异构数据库间数据转换的研究与构件开发,学位论文,2003.
[23] 段英杰,基于SVG的网络地用浏览器的设计与实现,学位论文,2004.
[24] 陈述彭 鲁学军 周成虎.地理信息系统导论.科学出版社,2000.29～55
[25] 葛庭婷.地理信息系统软件设计的研究与应用:[学位论文].大连理工大学,2002
[26] 陈勇,基于XML的地图网络发布技术的研究,学位论文,2004.
[27] 黄泽纯,基于XML的WebGIS网关设计与实现,学位论文,2003.
[28] 徐爱民,基于J2EE/XML的LBS系统研究与实践,学位论文,2004.
[29] Wai-yeung YAN, Mobile Map Service with Scalable Vector Graphics, IEEE, 2004.
[30] Julius C. Mong,David F. Brailsford, Using SVG as the Rendering Model for Structured and Graphically Complex Web Material, IEEE, 2003.
[31] Chris, SVG Implementations, http://www.w3.org, 2004.
[32] 曾勇,移动LBS系统的实现,学位论文,2004.
[33] 刘长征,位置服务系统的研究与实现,学位论文,2004.
[34] 韩鹏,嵌入式导航定位地理信息系统的设计与实现,学位论文,2004.
[35] 郑翠玲,基于PDA群的移动GIS研究与应用,学位论文,2004.
[36] 刘荣城,基于XML分布式WEB电子海图系统的研究,学位论文,2003.
[37] 陈能成,基于J2EE的分布式空间信息服务,2003,博士论文。
[38] Hossein Mohammadi, Developing Wireless GIS: Using Java and XML Technologies, Map Asla, 2003.
[39] Chaitan Baru, Amit behere, Chareles Cowart at, Representation and Display of Geospatial Information :A Comparision of ArcXML and SVG, IEEE, 2002.
[40] http://www.borland.com/Jbuilder, 2005.
[41] 林胜利,刘军,精通J2ME无线编程[M],北京:中国铁道出版社,2004.
[42] Dreamtech软件开发组,基于J2me的无线设备编程源代码解析[M],北京:电子工业出版社,2002.
[43] WebLogic tourail, BEA Company, Http://www.BEA.com.cn, 2005.
[44] 张志辉,基于XML的电子商务系统的设计与实现,北京工业大学,学位论文,2001.
[45] 郑华,基于XML和JAVA的异构数据库集成中间件系统的研究与设计,广西大学,2004.
[46] 刘新,基于J2EE和XML的移动商务系统的研究与实现,武汉科技大学,2004.
[47] 凌永丰,基于J2EE/XML的web数据处理技术的研究,南京理工大学,2003.
[48] XML to DataBase tourial, Http://www.IBM.com.cn, 2005.
[49] CAO Hai2b ingl, X IA Yingl, GE Jun2w ell, BA E Hae2young, Analys is and compare of location technologies supporting LBS, Tsinghua Tong fang, 2004.
[50] Martin Breunig,Wolfgang Baer, Database support for mobile route planning systems, IEEE, 2004.
[51] Robert Lafore, Datastructures&algorithms in java, MITCHELL WAITE, 1998.
[52] 马少林,基于EJB分布式对象的研究与应用,兰州理工大学,学位论文,2004.
[53] 王宏勇,卢战伟,嵌入式GIS最短路径分析中Dijkst ra法改进,测绘学院学报,2000.
[2] 徐云和,谢刚生,程朋跟等,基于SVG的空间数据可视化[J],计算机应用研究,2005,46～50.
[3] 段英杰,基于SVG的网络地图浏览器的设计与实现,学位论文,2004.
[4] 陈勇,基于XML的地图网络发布技术的研究,学位论文,2004.
[5] 王冲,李清泉,陈珉,基于J2me平台的SVG应用组件的设计[J],武汉大学学报,2003,28(1).
[6] AndView,TinyLine For MIDP SDK, Http://www.tinyline.com.
[7] Http://www.apache.org, 2005.
[8] 龙中花,基于嵌入式linux平台Mobile SVG浏览器的设计与实现,学位论文,2004,3.
[9] SVG1. lspecification, SVG workinggroup, http://www.w3.org/TR/SVG11/, 2001.
[10] SVGTiny1.2 specification, SYG working group http://www.w3.org, 2005.
[11] Ikivo the Mobile SVG Company. Mobile SVG:The Graphics Wave of the Future, 2005
[12] Jeff Weder, Mobile SVG, Texas Instruments, Feruary 2003.
[13] 飞思科技研发中心.JavaWeb服务应用开发祥解.北京:电子工业出版社,2002。
[14] IVOR HORTON,JAVA 2编程指南,北京:电子工业出版社,2003.
[15] 王勇,基于Java技术的移动目标定位系统的研究,学位论文,2004.
[16] 梅贤昌,基于J2BB的LBS系统的设计与实现,学位论文,2004.
[17] 张勇,基于J2ME的SVG组件设计,学位论文,2004.
[18] 张磊,J2ME环境下开发移动web服务的研究,学位论文,2003.
[19] 罗奕,基于J2ME和Web Services技术的手机应用程序研究与开发,学位 论文,2004.
[20] 郑华,基于XML和JAVA的异构数据库集成中间件系统的研究和实现,学位论文,2004
[21] 王浩波,基于JAVA和XML信息系统集成研究,学位论文,2004.
[22] 王平,基于XML的异构数据库间数据转换的研究与构件开发,学位论文,2003.
[23] 段英杰,基于SVG的网络地用浏览器的设计与实现,学位论文,2004.
[24] 陈述彭 鲁学军 周成虎.地理信息系统导论.科学出版社,2000.29～55
[25] 葛庭婷.地理信息系统软件设计的研究与应用:[学位论文].大连理工大学,2002
[26] 陈勇,基于XML的地图网络发布技术的研究,学位论文,2004.
[27] 黄泽纯,基于XML的WebGIS网关设计与实现,学位论文,2003.
[28] 徐爱民,基于J2EE/XML的LBS系统研究与实践,学位论文,2004.
[29] Wai-yeung YAN, Mobile Map Service with Scalable Vector Graphics, IEEE, 2004.
[30] Julius C. Mong,David F. Brailsford, Using SVG as the Rendering Model for Structured and Graphically Complex Web Material, IEEE, 2003.
[31] Chris, SVG Implementations, http://www.w3.org, 2004.
[32] 曾勇,移动LBS系统的实现,学位论文,2004.
[33] 刘长征,位置服务系统的研究与实现,学位论文,2004.
[34] 韩鹏,嵌入式导航定位地理信息系统的设计与实现,学位论文,2004.
[35] 郑翠玲,基于PDA群的移动GIS研究与应用,学位论文,2004.
[36] 刘荣城,基于XML分布式WEB电子海图系统的研究,学位论文,2003.
[37] 陈能成,基于J2EE的分布式空间信息服务,2003,博士论文。
[38] Hossein Mohammadi, Developing Wireless GIS: Using Java and XML Technologies, Map Asla, 2003.
[39] Chaitan Baru, Amit behere, Chareles Cowart at, Representation and Display of Geospatial Information :A Comparision of ArcXML and SVG, IEEE, 2002.
[40] http://www.borland.com/Jbuilder, 2005.
[41] 林胜利,刘军,精通J2ME无线编程[M],北京:中国铁道出版社,2004.
[42] Dreamtech软件开发组,基于J2me的无线设备编程源代码解析[M],北京:电子工业出版社,2002.
[43] WebLogic tourail, BEA Company, Http://www.BEA.com.cn, 2005.
[44] 张志辉,基于XML的电子商务系统的设计与实现,北京工业大学,学位论文,2001.
[45] 郑华,基于XML和JAVA的异构数据库集成中间件系统的研究与设计,广西大学,2004.
[46] 刘新,基于J2EE和XML的移动商务系统的研究与实现,武汉科技大学,2004.
[47] 凌永丰,基于J2EE/XML的web数据处理技术的研究,南京理工大学,2003.
[48] XML to DataBase tourial, Http://www.IBM.com.cn, 2005.
[49] CAO Hai2b ingl, X IA Yingl, GE Jun2w ell, BA E Hae2young, Analys is and compare of location technologies supporting LBS, Tsinghua Tong fang, 2004.
[50] Martin Breunig,Wolfgang Baer, Database support for mobile route planning systems, IEEE, 2004.
[51] Robert Lafore, Datastructures&algorithms in java, MITCHELL WAITE, 1998.
[52] 马少林,基于EJB分布式对象的研究与应用,兰州理工大学,学位论文,2004.
[53] 王宏勇,卢战伟,嵌入式GIS最短路径分析中Dijkst ra法改进,测绘学院学报,2000.