缓和曲线坐标反算的直接解算法  

Direct Arithmetic of Coordinate Inverse on a Spiral Curve

作　　者：覃辉[1] 

机构地区：[1]广东省科技干部学院建筑工程系,广东珠海519090

出　　处：《勘察科学技术》2010年第5期18-23,共6页Site Investigation Science and Technology

基　　金：广东省高等教育改革项目(2006036);"十一五"国家级规划教材建设项目(703);卡西欧(上海)贸易有限公司资助项目

摘　　要：该文提出了缓和曲线的拟合圆弧的概念,利用拟合圆弧确定垂足点的初始桩号,再用垂足点走向方位角与边距方位角组成的角度方程精确解算初始桩号的改正数,实现了直接解算垂足点桩号的目的。The paper introduces the fitting arc which is very close to a given spiral,first to confirm the initial pile number of perpendicular point by the fitting arc,then to regard the mileage as the preliminary mileage of the point perpendicular to the spiral,and to calculate the corrective value of the mileage solving an angle equation,the exact mileage of the perpendicular point to the spiral has been obtained.

关 键 词：拟合圆弧 角度方程 垂线方程残差 fx-5800P编程计算器 

分 类 号：U412.34[交通运输工程—道路与铁道工程] U212.332