摘要
本文首先建立了用于车载导航的电子地图中道路网络的实体对模型 ,在研究 GPS/DR定位误差分布的前提下 ,基于局部线性化思想 ,利用定位轨迹和电子地图道路网的相关性 ,实现了地图分级匹配计算 ,从而消除 GPS/DR定位信息中的有偏误差。最后 ,在 Auto CAD环境下用实验验证了上述算法。结果表明该算法模型简单 ,不仅可以提高车载导航系统的定位精度 。
Firstly,this paper constructs the model of entitypartners of road network in digital map.Then,the feature of positioning error of GPS/DR integrated navigation is discussed.Based on the thought of partial linearization and the relativity between positioning traces and road networks,the gradation MapMatching calculation was realized and it removes the biased error of GPS/DR positioning information.In the end,the algorithm is tested under AutoCAD.The results show that the algorithm stated here is easy to realize and can not only improve the positioning performance of Vehicle Navigation System,but also provide a visual navigation effect.
出处
《中国惯性技术学报》
EI
CSCD
2000年第3期37-41,共5页
Journal of Chinese Inertial Technology
基金
教育部高新技术资助
