Study On The Application Of Digital Technology For Road Survey

With the rapid development of electronic technology,information technology and spatial positioning technology,field road survey project has been out of the traditional means and methods of mapping,and the modern surveying and mapping techniques such as total station instrument and GPS are adopted.Digital map is adopted by Design Institute,and the storage medium is developed from paper to electronic one.Modern digital road survey mode can improve the efficiency of road survey work in a faster way.For this reason,in this paper completes the following research work.1.Author according to the basic principles of route selection and alignment,the selected line work of the site is completed.Based on the selection and installation of GPS control network point identification,T8 type GPS receiver circuit is adopted to control the overall GPS observation network by China.At the same time,CGO data processing software is used to understand and control network adjustment test,and coordinate data is obtained along the plane control points.2.Based on the GPS control network,the length and the turning angle of the selected drop wires are measured by using the Topcon GTS-102 N total station instrument,and the preparation of traverse EXCEL program is adopted to calculate the coordinates of the intersection of each table.Each intersection point is included in the leveling line,and the DL-202 digital level is used to measure the level of leveling,and the compiled leveling EXCEL table program is used to calculate the elevation of each leveling point.3.A method is proposed of Viva GS14 GPS-RTK combined with total station in operation.RTK is used to measure the terrain and feature in open areas,and when the satellite is unable to cover the area because of buildings and structures,the 3D coordinates of RTK real-time mapping points is used,then use the total station to measure it.4.Unmanned aerial vehicle(uav)tilt photography technology is applied to road topography,and the 3d imaging can be obtained to understand the state of the area at the time,the area size,the situation of demolished buildings and the budget for using the area.5.On the basis of the bypass traverse,the plane curve design of three grade highway is carried out,and the coordinate of side piles in the road is calculated.The T8 type GPS-RTK technique is used to loosen the center line and the edge of the road,and the longitudinal data of the road and the cross-sectional data are collected to realize the digitization of the road survey.