论文标题:多专题森林资源调查数据采集系统研究
Study on Multi-thematic Data Collection System of Forest Resource Inventory
论文作者
论文导师 唐小明,论文学位 硕士,论文专业 地图学与地理信息系统
论文单位 北京林业大学,点击次数 1090,论文页数 70页File Size5673K
2007-05-01论文网 http://www.lw23.com/lunwen_37967/
Forest Resources Inventory; Embedded GIS; Component; Ontology; SOA
森林资源调查是森林资源管理的基础性工作,在世界各国都得到了很高的重视。随着科学技术的发展,森林资源调查的调查手段正在不断的提高。个人数字助理(Personal Digital Assistant,PDA)作为最典型的嵌入式电子移动设备,已经在我国森林资源调查数据采集工作中得到了应用,并很快成为了我国森林资源调查数据采集研究的热点之一。 PDA在我国森林资源调查数据采集工作中的应用起步不久,现有的系统往往只能针对特定的某一项森林调查,从而很难对系统进行修改与扩展,一旦需求有轻微变动,要么直接到程序中进行繁杂的手工调整,要么则根据需求重新进行开发。这样,付出了极大的重复开发代价,既破坏了程序的完整性,也增大了系统维护的困难,造成了极大的人力、物力和财力的浪费。 本文以不同专题、不同省区的森林资源外业调查数据采集工作的普遍需求为出发点,结合北京市森林资源信息管理PDA数据采集系统实例,以SOA及构件思想为指导,以GIS、GPS、表单建模、本体建模等技术为支持,以嵌入式开发为手段,对森林资源调查PDA数据采集系统中各功能模块进行了设计与开发。将专题的变化、个性化界面设置和管理抽象为调查系统的组织构件,实现对功能组件的有效管理和设置,避免了不同专题森林资源调查系统的重复开发,解决了我国森林资源调查中不同专题、不同省区的林业调查系统之间难于统一、单个林业调查系统难于扩展的问题,提高了森林资源调查系统的自我扩展性和开发效率,实现了面向多专题服务的森林资源调查数据采集的目的,从而为森林资源调查工作做出贡献。
Nowadays, many countries have placed their emphasis on forest resources inventory because it is the foundation of forest resource management. At the same time, the method of forest resource inventory is unceasing improved with the development of science and technology. As a kind of typical embedded equipment, PDA has been used in China"s forest resource data acquisition. Now, how to use PDA to carry on data collection become a hot spot of the domain of forest resource inventory.It is not a long time that PDA used in data collection of forest resource inventory In China, and most data collection systems on PDA are created for one certain inventory, it is hard to amend and expand these systems. Once a small change happens in requirement, there are only two ways to go: carrying on the complicated readjusting in the program or developing a new system according to the requirements. Both of them will ruin the integrality of the program and cause a lot of time, money and human resources waste.The article takes the universal demand in data collection of forest resource inventory as a starting point, unifying the example of Beijing forest resources information management system, taking SOA and COM as the instruction, taking GIS, GPS, form-mode and ontology as the support, taking the embedded program development as the method, designing and developing the function modules in data collection system on PDA. The article brings forward the way to construct a set of component by abstracting the requirements and the personal interface. By effectively managing those components, we can avoid redeveloping the software, enhance the programming efficiency and solve the problem of system expansion. The way that the article mentioned can realize multi-thematic data collection of forest resource inventory and contribute the work of forest resources investigation.
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