摘要
以东莞市某航道水下数字地形构建为例,应用GPS-RTK技术并配合测深仪,获取水下地形测量原始数据。通过VC+ObjectARX CAD二次开发,在构建格网DEM精度和运行效率方面,利用几种内插方法实现了数字航道水下地形模型的构建,得出在水下地形起伏不大的情况下,TIN线性内插在构建航道格网DEM中是一种高效率、高精度的方法。
Based on the underwater terrain survey raw data obtained by GPS-RTK and depth sounder,the authors constructed a channel's digital elevation model in Dongguan city by VC+ObjectARX CAD redevelopment and discussed the precision and efficiency of Several ways in Grid DEM construction.We conclude that the linear interpolation based on TIN is the high-efficiency and high-precision approach of constructing underwater Gird DEM,especially in the undulating terrain.
出处
《物探化探计算技术》
CAS
CSCD
2011年第1期83-86,121,共4页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家自然科学基金项目资助(41071265)
