| 移动对象轨迹更新体系 |
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| 引用本文： | 何云斌,樊守德,郝忠孝.移动对象轨迹更新体系[J].计算机工程与应用,2008,44(27):172-174. |
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| 作者姓名： | 何云斌 樊守德 郝忠孝 |
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| 作者单位： | 1.哈尔滨理工大学 计算机科学与技术学院，哈尔滨 150080 2.哈尔滨工业大学 计算机科学与技术学院，哈尔滨 150001 |
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| 摘 要： | 在移动对象数据库中存在着移动对象位置的频繁更新，因而，如何管理移动对象轨迹（位置）的更新将成为移动对象数据库要解决的问题。对移动对象轨迹更新策略中存在的问题，提出了一个统一的移动对象轨迹更新体系。首先定义了移动对象的轨迹，从移动对象轨迹建模的角度，将移动对象轨迹的更新策略归纳为基于点与矢量的移动对象轨迹更新策略，给出了移动对象轨迹的更新原理及算法，并进行了两种更新策略的模拟实验比较。
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| 关 键 词： | 移动对象的轨迹 点与矢量 更新原理及算法 |
| 收稿时间： | 2007-12-3 |
| 修稿时间： | 2008-1-28
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Updating system of moving objects trajectory |
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| HE Yun-bin,FAN Shou-de,HAO Zhong-xiao.Updating system of moving objects trajectory[J].Computer Engineering and Applications,2008,44(27):172-174. |
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| Authors: | HE Yun-bin FAN Shou-de HAO Zhong-xiao |
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| Affiliation: | 1.College of Computer Science and Technology，Harbin University of Science and Technology，Harbin 150080，China 2.College of Computer Science and Technology，Harbin Institute of Technology，Harbin 150001，China |
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| Abstract: | Because the location of moving objects is frequently updated in moving objects databases，it is the issue to be solved how to manage the updating of the moving objects trajectory （location） in moving objects databases.This paper proposes the general updating system of the moving objects trajectory which solves the issues in the updating policies of the moving objects trajectory.The trajectory of moving objects is firstly defined，and then the updating policies of the moving objects trajectory are induced to two kinds：point &; vector，which is on the basis of modeling the trajectory of moving objects in this paper.This paper also describes the updating principle &; algorithm of the trajectory of moving objects，and compared two kinds of updating policies in the simulated experiment. |
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| Keywords: | the trajectory of moving objects point & vector updating principle & algorithm |
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