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| 基于开放互操作标准的分布式地理空间模型共享研究 | |
| 引用本文： | 冯敏,LIU Shu-guang,Ned H.Euliss,尹芳.基于开放互操作标准的分布式地理空间模型共享研究[J].遥感学报,2009,13(6):1067-1077. |
| 作者姓名： | 冯敏 LIU Shu-guang Ned H.Euliss 尹芳 |
| 作者单位： | 1. 中国科学院,地理科学与资源研究所,北京,100101;University of Maryland Institute for Advanced Computer Studies,College Park,MD,20742,USA 2. U.S.Geological Survey, Earth Resources Observation and Science Center, Sioux Falls, SD, 57198, USA 3. U. S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37~(th) St SE,Jamestown,ND,58401,USA 4. 中国科学院,地理科学与资源研究所,北京,100101 |
| 基金项目： | 国家科技基础条件平台项目(编号: 2005DKA32300)和国家863项目(编号: 2006AA01A120)。 |
| 摘 要： | 传统的单机环境和封闭式网络环境由于有限的资源利用能力, 难以充分支持分散地学数据、模型等资源的共享与应用集成。基于网络环境的信息交换特点, 提出了分布式地理空间模型共享的服务体系。该体系以数据、模型、元数据等互操作要素为核心, 通过网络将数据、模型等网络节点进行开放式耦合。针对地理空间模型服务的互操作问题, 提出了分布式环境下的模型共享服务交互接口, 该接口定义了模型服务元数据、模型服务的交互操作、模型服务的通讯方式等交互规则, 尽可能地降低模型服务与模型终端之间在数据交换、功能调用等方面的互操作困难。为了降低将模型共享为模型服务的实现难度, 设计和开发了地理空间模型共享平台, 并介绍了在该平台上发布地理空间模型的2种方法。最后介绍了研究成果在Prairie生态模型共享方面的应用实践。 |
| 关 键 词： | 地理空间模型 模型共享 分布式计算 互操作 |
| 收稿时间： | 2008/7/21 0:00:00 |
| 修稿时间： | 2009/5/19 0:00:00 |
Distributed geospatial model sharing based on open interoperability standards |
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| FENG Min,LIU Shu-guang,Ned H. Euliss Jr. and YIN Fang.Distributed geospatial model sharing based on open interoperability standards[J].Journal of Remote Sensing,2009,13(6):1067-1077. | |
| Authors: | FENG Min LIU Shu-guang Ned H Euliss Jr and YIN Fang |
| Affiliation: | 1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 2. University of Maryland Institute for Advanced Computer Studies, College Park, MD, 20742, USA;;3. U.S. Geological Survey, Earth Resources Observation and Science Center, Sioux Falls, SD, 57198, USA;;4. U. S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th St SE, Jamestown, ND, 58401, USA;1. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; |
| Abstract: | Numerous geospatial computational models have been developed based on sound principles and published in journals or presented in conferences. However modelers have made few advances in the development of computable modules that facilitate sharing during model development or utilization. Constraints hampering development of model sharing technology includes limitations on computing, storage, and connectivity; traditional stand-alone and closed network systems cannot fully support sharing and integrating geospatial models. To address this need, we have identified methods for sharing geospatial computational models using Service Oriented Architecture (SOA) techniques and open geospatial standards. The service-oriented model sharing service is accessible using any tools or systems compliant with open geospatial standards, making it possible to utilize vast scientific resources available from around the world to solve highly sophisticated application problems. The methods also allow model services to be empowered by diverse computational devices and technologies, such as portable devices and GRID computing infrastructures. Based on the generic and abstract operations and data structures required for Web Processing Service (WPS) standards, we developed an interactive interface for model sharing to help reduce interoperability problems for model use. Geospatial computational models are shared on model services, where the computational processes provided by models can be accessed through tools and systems compliant with WPS. We developed a platform to help modelers publish individual models in a simplified and efficient way. Finally, we illustrate our technique using wetland hydrological models we developed for the prairie pothole region of North America. |
| Keywords: | geospatial model model sharing distributed computing geospatial interoperability |
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