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随着主动安全技术、自动驾驶技术的发展,高精度导航地图得到越来越多的运用。本文提出了一种面向高精度导航地图的、基于里程参数的道路平面几何解析模型。通过动态地构造点集上的正交多项式系和约束最小二乘法,根据拟合最大误差动态地计算道路的几何描述参数。使用该模型进行了120 km高速道路高精度地图数据生产,以三段典型道路为实例进行试验,表明该方法能对道路几何进行准确的描述,保证道路几何的连续与光滑,同时最大限度地减少数据冗余。该模型对高精度地图道路几何描述具有一定优势。
With the active safety technology, automatic driving technology, high-precision navigation maps get more and more use. This paper presents a road plane geometry analysis model based on mileage parameters for high-precision navigation maps. By dynamically constructing the orthogonal polynomial system and constrained least square method on the point set, the geometrical description parameters of the road are dynamically calculated according to the maximum fitting error. The model was used to produce high precision map data of 120 km expressway. The experiment was carried out on three typical roads, which showed that the method can accurately describe the road geometry, ensure the continuity and smoothness of the road geometry and minimize Data redundancy. The model has some advantages for high-precision road geometry description.