中文摘要：

针对利用地球重力场模型计算大范围、高分辨率局部区域模型垂线偏差速度慢这一问题,该文在对位系数模型泰勒级数展开的基础上,提出了采用向量运算、混合编程、预先计算缔合勒让德函数Belikov递推方法中与经纬度无关量的方法;最后与严密公式计算结果作对比。实验结果表明,该方法不仅可以满足精度要求,而且可以有效提高计算速度。

英文摘要：

With the increase of calculation area scopes and resolution,the calculation time increases rapidly,when using gravity field model to calculate model vertical deflection.Concerning about this issue,based on spreading Taylor formula,this paper used vector operation,mixed programming and pre-calculated some quantities which had nothing to do with latitude and longitude in associated Legendre function,then compared with true values.Experimental results showed that the method proposed not only met the need of precision,but also improved the calculation speed efficiently.