| 车辆监控系统中时空数据模型设计与实现 |
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| 引用本文： | 王卫京,翁敬农,樊珂.车辆监控系统中时空数据模型设计与实现[J].计算机工程与设计,2006,27(6):1042-1044,1051. |
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| 作者姓名： | 王卫京 翁敬农 樊珂 |
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| 作者单位： | 北京航空航天大学,计算机学院,北京,100083 |
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| 摘 要： | 针对车辆监控GIS系统中车辆对象轨迹数据变化频率较高、数据量大的特点，首先分析了当前常用的几种数据存储方法，然后在时空立方体模型基础上，提出通过切分时空立方体，形成单元时空立方体，并建立轨迹版本的建模思想。对模型的实现和基于此模型的时空查询算法进行了详细阐述。验证表明该模型能满足实际应用的需要，在减少存储和时空查询性能上有较大提高。
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| 关 键 词： | 车辆监控 时空立方体 轨迹版本 空间索引 时空查询 |
| 文章编号： | 1000-7024（2006）06-1042-03 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-01-17 |
Design and implementation of spatial-temporal data model in vehicle monitor system |
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| WANG Wei-jing,WENG Jing-nong,FAN Ke.Design and implementation of spatial-temporal data model in vehicle monitor system[J].Computer Engineering and Design,2006,27(6):1042-1044,1051. |
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| Authors: | WANG Wei-jing WENG Jing-nong FAN Ke |
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| Affiliation: | School of Computer Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | According to the special features -changed frequently and a large amount of datum-trajectory data in the vehicle monitor system, some methods of trajectory data storage were analyzed. Then a new data model based on space-time cube and manage data by trajectoryversion was built up. It was also described how to build this model and do some spatial-temporal query. Experiences show that this model satisfy the requirements of application. The storage is reduced and the performance of spatial-temporal query is improved. |
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| Keywords: | vehicle monitor space-time cube trajectory-version spatial index spatial-temporal query |
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