Comparing with the conicoid fitting method (CFM)to converse GPS height, the accuracy of the transform result with the CF &NNM method canimprove 20 percent.

• 作者还对该方法的实质进行了解析，与二次曲面拟合法相比，利用CF&NNM法转换GPS高程，其转换结果精度大约可提高20%25，具有推广价值。