three point reference method

The calculation method of characteristic value of load is put forward on "the referential point method" by which computation formulas and tables of characteristic value of load corresponding to the design reference period are given.

在对荷载概率分布模型分析的基础上,采用伯努利试验假设,建立了任意设计基准期内的荷载概率分布模型,提出基于“基准点法”的荷载特征值取值标准,即取设计基准期内荷载极大值分布的概率密度函数最大的荷载作为特征值,并进一步导出了与设计基准期对应的荷载特征值计算公式和表格。

The author points out the reference point calculation method in switching plane survey coordinates can be applied in dynamic location survey of GPS instead of point precise height.

GPS动态定位中大部分进行的是平面作业,不需要点的精确高程,可采用简便的基准点算法进行平面坐标转换。