Total station line-height surveying and its application

As the appearance of total-station instrument,especially intelligence total-station instrument,great changes have taken place in survey works.Difficult survey jobs could be completed easily by special functions of total-station instrument.For example,it is convenient to measure the height of an aerial target point by REM of total-station instrument on the premise of reaching the nadir point of the aerial target point and settling a reflect prism,or it will not be put into effect.For that reason,a new special survey function of total-station instrument,line-height surveying,was introduced in this paper.The survey principle and practical application were discussed.