Two kinds of main data structures of the DTM are briefly introduced in the paper, which are irregular netoftriangulation (TIN) and regular rectangular grid (grid).
文中简要介绍了DTM的两种主要的数据结构:不规则三角网(TIN)和规则矩形格网(GRID)。
2
In the adjustment program oftriangulationnet by directional condition observation, to apply the formulas of polar coordinate condition is a new way.
本文介绍了三角网按方向条件观测平差的电算程序中,应用极坐标条件式的新方法。
3
Abstract: Establishing DTM, triangulationnet is made of some rules, but some mistakes can take place in the part of the net.