摘要
应用杨赤中滤波推估法,将地形碎部点高程观测值看作一种包含规律性和随机性变化的复合变量,求其二项系数加权游动平均,建立估值数学模型,求得各格网点高程估值。将离散的数据经插值计算转换为DEM数据,并根据其网格顶点来分析、推算和显示网格单元的坡度和坡向。
According to YANG Chizhong filtering extimation method, the broken observations can be considered as the complex variables of the regular and random changes to determine the weighted averages of the binomial coefficient,establish the estimated mathematical model and calculate the estimated elevation of each lattice point. Tfien the discrete data can be converted into DEM data through interpolation calculating, and the slope and aspect of grid unit will be analysed, calculated and displayed in accordance with its grid point.
出处
《海洋测绘》
2008年第1期9-12,共4页
Hydrographic Surveying and Charting
基金
广西区教育厅科研面上项目(2006-93)
关键词
杨赤中滤波推估法
DEM
坡度
坡向
YANG Chizhong filtering estimation method
DEM
slope
aspect
