全站仪及测距仪在路线中线点测设中的应用

我国各测绘单位基本普及全站仪和测距仪这种先进测绘仪器。因此,研究用全站仪和测距仪测设中线点就显得十分必要。本文建立了曲线独立坐标系,推导出用全站仪和测距仪测设中线点的数学模型,并编制PC-E500机的测设程序。这样,在测设中,由于测站点和测点(中线点)处于同一坐标系下,利用全站仪的坐标放样功能及极坐标法(对于测距仪)就能方便进行测设中线点。我们用这种方法在某国道改扩建成程中,进行了应用,证明此法是可行的,具有简便、快捷、精度高等优点。

Study on route laying-out with total-stations & EDM instruments

The advanced survey instruments such as Total-stations and EDM have been popularized in the survey firms in China, so that it is necessary to study the laying-out of midline points. The curve independent coordinate system should be established, in which the mathematical model for midline point laying-out with Total-stations and EDM instruments is deduced and the program used in PC-E500 is also designed. Thus, the instrument stations and midline points are arranged in the same coordinate system and it is easy to lay-out the midline points by means of polar method with Total-stations. The method has been spplied in a national road reform construction and has been proved to be feasible with some advantages of simplification, high speed and precision.