用免仪高、目标高同时对向三角高程观测法替代二、三等水准测量的研究

Study on Replacing Second and Third Order Leveling by Subtending Simultaneity Observation of Trigonometric Leveling without Height of Total Station Instrument and Its Goal

介绍了用两台改造后的全站仪任意置站的方法进行三角高程对向测量求取高差的公式推导和误差计算,论述了用三角高程测量代替二、三等水准测量的可行方法,测量时不必量取仪器高、目标高,减少了三角高程的误差来源,加快了施测速度。并对测量误差进行分析,指出用三角高程替代三等水准测量的可行性。

It is introduced that with two total station instruments after transforming to set up the station arbitrarily, the deduction for formula and the calculation for error are made to evaluate the differences in elevation with the subtending measurement of trigonometric leveling. The feasible method is discussed for replacing the second and third order leveling by the trigonometric leveling. In the measurement with the method, the error source is reduced and the measuring pace is accelerated for without the height of the total station instrument and its goal. At the same time, the measuring error is analyzed, and the feasibility for replacing the third order leveling by the trigonometric leveling is indicated.