1) double-direction observation method
对向观测法
1.
Triangle elevation with total-station can be used for control survey replacing leveling,which contains the double-direction observation method and midpoint observation method.
全站仪三角高程测量可以代替水准测量进行高程控制,主要有对向观测法和中间观测法。
3) Method of Direction Observation
方向观测法
4) broadside method
侧向观测法
5) reciprocal observation at the same time
同步对向观测
1.
The author has verified a new trigonometric leveling method which proceeds measures as follows:It is based on ATR(Automatic Target Recognition),avoids vertical refractional influence through reciprocal observation at the same time, designs observational routes to form spanning quadrilaterals across obstacle and adopts a new weight factor from precision estimation.
以自动型全站仪的自动目标识别技术为硬件基础进行跨河三角高程试验,采用严格同步对向观测消除大气折光影响,设计观测路线构成具有外部检核条件的跨越四边形,根据精度分析提出新的定权方法。
6) Synchro reciprocal observation
同时(步)对向观测
补充资料：大坝内部变形观测(见水工建筑物变形观测)
大坝内部变形观测(见水工建筑物变形观测)
daba neibubianxing guanCe大坝内部变形观测见水工建筑物变形观测。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条