For the alignment measurement in the equipment installation of long straight track,this paper puts forward a simple alignment measurement scheme that combines the total station with laser tracker. Under the circumstances of only control points at both ends of the line without establishing 3D control network,both ends of short linear reference are established by high-precision total station,which determines the laser tracker coordinate datum to achieve the middle segment alignment measurement.The experimental result show s that the straightness accuracy of this alignment measurement scheme is better than 0.2 mm in about 110 meters long experimental track,w hich can meet the precise installation requirements.This scheme with high efficiency and reliability can provides a reference for similar engineering project..%针对长直轨道设备安装中的准直问题,提出一种结合全站仪和激光跟踪仪的简易准直测量方案.在仅有轴线首尾端控制点的情况下,无需建立三维控制网,仅利用高精度全站仪建立两端短直线基准,并以此确定激光跟踪仪坐标基准,实现直线中间段准直测量.实验结果表明,对于长约110 m的实验轨道,该准直测量方案的平面直线精度优于0.2 mm,满足精密安装的要求,且安装效率和可靠性相应提高.
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