forward intersection survey is the common method in displacement monitoring.
用前方交会法进行位移监测是测量中常用的方法。
a simple formula of side-measured forward intersection is derived from angle-measured forward intersection, which is easy, feasible and practical.
笔者提出从测角前方交会推演出测边解算前方交会的简便公式,方便可行,比较实用。
this paper introduces the method, accuracy and attention issue concerning measurement of tilt of building by using forward intersection method, through the practice of an example.