DTM高程插值算法及其在工程中的应用

DTM Elevation Interpolation Algorithm and Its Applications in Engineering

为了讨论数字地面模型的应用,利用理论研究方法结合工程案例研究了插值理论在DTM高程计算中的应用;研究表明:采用高次多项式插值、线性插值、曲面重叠插值和最小二乘法插值等差值算法均可完成DTM模型的插值计算.把该算法应用于工程领域可以完成规划设计和工程施工中的面积计算、体积计算、路线对比和方案优化等,作用巨大.

In order to discuss the application of digital terrain models, DTM elevation interpolation theory theoretical research methods are combined with the engineering case study of calculations. Study shows that high order polynomial interpolation, linear interpolation, surface overlap interpolation and least - multiplication interpolation differ- ence algorithm can be used to complete the DTM model interpolation calculation. It is very effective to apply the algorithm to engineering planning design, area and volume calculations, route~ contrast and planning optimization.