Abstract: Establishing DTM, triangulation net is made of some rules, but some mistakes can take place in the part of the net.
文摘：建立数字地模时，三角网是按一定规则组成的，但局部仍会出现错误。
In the adjustment program of triangulation net 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。
In the adjustment program of triangulation net 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。
应用推荐