设测站O点高程HO=37.32m,仪器高i=1.45m,盘左望远镜上仰时读数小于水平时读数90°,采用视距测量方法,测得测站O至目标A的视距Kl=38.5m,中丝读数v=1.47m,盘左竖盘读数L=81°45′.

问题描述:

设测站O点高程HO=37.32m,仪器高i=1.45m,盘左望远镜上仰时读数小于水平时读数90°,采用视距测量方法,测得测站O至目标A的视距Kl=38.5m,中丝读数v=1.47m,盘左竖盘读数L=81°45′.
1.求O至A的水平距离(精确到0.1m)
答:DOA =
2.求A点高程(精确到0.01m).
答:HA =

水平距离=38.5-38.5*sin81.45
ha=37.32+1.45+(38.5-cos81.45*38.5)-1.47