| 网络中移动对象的2维时空数据模型 |
| |
| 引用本文： | 陈碧宇,陈晓玲,陈慧萍,王长海.网络中移动对象的2维时空数据模型[J].测绘学报,2007,36(3):329-334. |
| |
| 作者姓名： | 陈碧宇 陈晓玲 陈慧萍 王长海 |
| |
| 作者单位： | 武汉大学,测绘遥感信息工程国家重点实验室,湖北,武汉,430079;武汉大学,测绘遥感信息工程国家重点实验室,湖北,武汉,430079;江西师范大学,鄱阳湖生态环境与资源研究教育部重点实验室,江西,南昌,30022;广西电力工业勘察设计院,广西,南宁,530023 |
| |
| 基金项目： | 国家973计划项目(2006CB701300)，教育部“长江学者和创新团队发展计划——创新团队”项目(IRT0438) |
| |
| 摘 要： | 提出一种新的2维网络中移动对象的时空数据模型2-Dimensional Spatio-Temporal data model for Mov-ing Objects in Network(2DSTMON)。2DSTMON时空数据模型基于线性参考思想,将3维空间中的轨迹数据转换到2维空间中进行存储和管理,并采用运动矢量的数据更新方式,具有较小的数据量和较低的更新代价。最后,利用ESRI的ArcEngine实现并验证2DSTMON时空数据模型。
|
| 关 键 词： | 时空数据模型 移动对象 网络 |
| 文章编号： | 1001-1595（2007）03-0329-06 |
| 修稿时间： | 2006-08-23 |
2-Dimentional Spatio-Temporal Data Model for Moving Objects in Network |
| |
| CHEN Bi-yu,CHEN Xiao-ling,CHEN Hui-ping,WANG Chang-hai.2-Dimentional Spatio-Temporal Data Model for Moving Objects in Network[J].Acta Geodaetica et Cartographica Sinica,2007,36(3):329-334. |
| |
| Authors: | CHEN Bi-yu CHEN Xiao-ling CHEN Hui-ping WANG Chang-hai |
| |
| Institution: | 1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China; 2. The Key Lab of Poyang Lake Ecological Environment and Resources Development, Jiangxi Normal University, Nanchang 330022, China; 3. Guangxi Electric Power Industry Investigation Desigen and Research Institute, Nanning 530023, China |
| |
| Abstract: | With the increasing popularity of mobile positioning device and wireless communications,storage and query of dynamically changing information of moving objects in network has become feasible.It can be widely used in such applications as VNS,LBS,and ITS.However,due to their special spatiotemporal conditions,there is still a lack of efficient data-model to support storage and queries about trajectories.In view of this,we developed a new spatiotemporal model,named 2Dimensional Spatio-Temporal data model for Moving Objects in Network(2DSTMON), to deal with network constrain trajectories.In the model,trajectories from(x,y,t) space were transformed to 2-D space;thus,they could be described as vector polyline,and stored in mature spatial database.That updating operations by motion vectors were employed made updating at low frequency and storing at a little capacity possible.Finally,we implemented the 2DSTMON model and then validated them through a series of experiments. |
| |
| Keywords: | spatiotemporal data model moving objects network |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
