吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (03): 640-645.doi: 10.7964/jdxbgxb201303014
廖军洪1,2, 邵春福1, 邬洪波2, 孙轶轩1, 王书灵1
LIAO Jun-hong1,2, SHAO Chun-fu1, WU Hong-bo2, SUN Yi-xuan1, WANG Shu-ling1
摘要: 提出了利用三维动态视距表征公路有效视距的思路和方法.该方法以平纵线形数据为数据源,利用三次B样条曲线拟合公路线形.综合考虑平纵线形组合、驾驶员动态视野和车前灯照射范围等因素,以驾驶员视点和视距验算点的连线与视线中心线间的夹角与驾驶员在该方向上最大动态视角的关系作为约束条件,采用空间几何向量关系进行计算.同时还提出了三维动态视距评价标准,以辨识视距不良路段,分析视距受限的原因.最后通过一个实际案例对本文方法的计算结果进行了验证,结果表明:该方法易于获取数据源,便于推广使用,为路线安全设计提供了技术支撑.
中图分类号:
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