摘要
:三角数模具有精度高的优点 ,但一般内插速度慢 ,缺乏有效的建网管理方法 .本文在独特建网方法的基础上 ,提出了一种三角形快速定位的方法 ,即对三角网用网格进行管理 .并以西安至延安中一段线路进行试验 ,同时将内插结果与 RACAD的离散点数模进行了比较 。
Triangular grid model has the advantage of high precision in interpolation,but it is usually slow in interpolation and deficient in construction and management.This paper propounds a method of locating a trangle efficiently based on a special method of constructing triangular grid,i.e we manage triangular grid through quadrangle grid.We made an experiment with a route from Xian to Yanan and compared the interpolation result with the grid model of RACAD system.We draw the conclusion that the interpolation precision of triangular grid model is higher.
出处
《长沙铁道学院学报》
CSCD
2000年第2期31-34,共4页
Journal of Changsha Railway University
基金
湖南省科委项目! ( 0 1-961-18-4 )
关键词
三角网数模
内插
精度
道路设计
triangular grid model
interpolation
precision
road design
