| 地图误差对地图匹配质量的影响 |
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| 作者单位： | 北京理工大学信息科学技术学院 |
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| 摘 要： | 高精度的数字地图是正确匹配车辆位置的基础。详细分析了地图数据的地理误差和拓扑误差的误差形式,路网数据模型的常见误差因素和改进策略,最后介绍了不同地图匹配算法对地图质量的敏感性和可行性。根据可能出现的误差对现有数字地图和匹配算法加以改进,弥补了原有数字地图带来的不精确缺陷。跑车实验证明,考虑了数字地图误差影响的匹配算法可以明显提高定位精度,减小车辆定位误差。
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| 关 键 词： | 地图质量 地图匹配 车载导航系统 |
The Relationship of Map Error and Map-Matching Quality |
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| LIU Zhi-de,CHEN Jia-bin,DING Lu,SONG Chun-lei. The Relationship of Map Error and Map-Matching Quality[J]. Journal of Institute of Surveying and Mapping, 2008, 0(5) |
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| Authors: | LIU Zhi-de CHEN Jia-bin DING Lu SONG Chun-lei |
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| Abstract: | The digital map with high precision is the basis of matching vehicle location correctly.The error appearance of map data including geometrical error and topological error was analyzed.The common error factor and improvement of road network data model was introduced.Then,the sensibility and feasible of different map-matching algorithm was presented.According to possible error,digital map and match algorithm were mended to improve accuracy.Test results showed that location precision could be improved obviously and vehicle location error could be decreased when taking map error into account. |
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| Keywords: | map error map-matching quality vehicle navigation system |
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