For the non-edge regions, the original tradition interpolation kernels such as bilinear and bicubic were used. 接著利用旋转后的距离与双线性内插法或双三次内插法内插该补偿点。
For the first time the bi-linear interpolation method and Triangulation method has been applied within a wide range of quasi-geoid model interpolation, to obtain good results. 并且首次将双线性内插法和三角形剖分法用于大范围内似大地水准面模型的内插，获得了较好的结果。
