| 引用本文: | 聂洪山,徐捷,王鸿谷.一种改进的AVL系统中车位显示修正算法.[J].国防科技大学学报,2003,25(1):61-64.[点击复制] |
| NIE Hongshan,XU Jie,WANG Honggu.A Study on the Corrective Algorithm of Displaying Points of Vehicles in AVL Systems[J].Journal of National University of Defense Technology,2003,25(1):61-64[点击复制] |
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| 一种改进的AVL系统中车位显示修正算法 |
| 聂洪山1, 徐捷2, 王鸿谷2 |
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(1.国防科技大学 ATR实验室，湖南 长沙 410073;2.国防科技大学 信息工程研究所，湖南 长沙 410073)
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| 摘要: |
| AVL系统就是GIS与GPS技术集成的成功应用。AVL系统中GPS信号在GIS地图上显示时，由于各种因素的影响，存在很大的偏差。对这种偏差的校正是十分必要的。为了解决这个问题，对以前提出的误差校正算法——“线性抽象算法”进行了改进，提出了另一种误差校正方法——“缓冲区线性抽象算法”，实验结果表明这种方法能在很大程度上校正偏差，不但具有较高的精度，而且还提高了算法效率。 |
| 关键词: AVL系统 GPS数据 GIS MapInfo地图 道路拟合 |
| DOI： |
| 投稿日期：2002-08-31 |
| 基金项目: |
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| A Study on the Corrective Algorithm of Displaying Points of Vehicles in AVL Systems |
| NIE Hongshan1, XU Jie2, WANG Honggu2 |
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(1.ATR Lab, National Univ.of Defense Technology，Changsha 410073,China;2.Institute of Information Engineering,National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| AVL system is a successful application of the integration of GIS and GPS. When GPS data is displayed on a GIS map, logically the vehicle point should be displayed on the roads. But because of the effect of errors, there are always warps between the true vehicle point and the displayed point on the map. It is necessary to correct these warps. An algorithm—Buffer Linear Abstraction Algorithm (BLAA) is put forward. This algorithm improves a former algorithm—Linear Abstraction Algorithm (LAA). Experimental result shows that BLAA has high precision, and at the same time it is more efficienty. |
| Keywords: AVL system GPS data GIS MapInfo map road fitting |
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