基于杨赤中插值法的坡度、坡向计算的实现与分析  

The Realization and Analysis of Slope and Aspect Calculation Based on YANG Chizhong Interpolation Method

作　　者：夏元平[1] 陈天伟[1] 张佃友[1] 

机构地区：[1]桂林工学院,广西桂林541004

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)

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.

关 键 词：杨赤中滤波推估法 DEM 坡度 坡向 

分 类 号：P224[天文地球—大地测量学与测量工程]