(Main functions: direct and reverse calculation of the whole route, elevation calculation, tunnel analysis, subgrade and pavement slope analysis, etc., support arbitrary chain breaking management, line element method and intersection method input. It supports all kinds of total station online, data analysis interface, man-machine conversation, data calculation and graphic analysis. There are 13 main functional modules, including 4 management modules and 4 free measurement programs: respectively, batch data file lofting, positive and negative calculation of coordinate azimuth, mutual conversion of construction coordinates and geodetic coordinates, and corresponding connection of rotation and translation through coordinate conversion coordinate system. There are five main procedures for measurement, including positive and negative calculation of the whole route, longitudinal slope, chain breaking and other additional functions. Subgrade survey, wayside point setting out, section survey, tunnel analysis and slope analysis all realize online functions. Registration part: online demand registration, manual input does not require registration, and other functions are not limited. Online is generally free registration for authorized users of office version, and there will be no other charges. If you want to experience the online measurement of this software for free, you can download the Android version online measurement beta V1.1. The download address is celiang/down_ view. asp? Id=1400author=lzh7316 [This software analyzes one of the advantages of the line: on arbitrary survey points, we can analyze the connection between the survey point and the tunnel (contour overbreak and underexcavation, etc.), the connection between the point and the subgrade and pavement, the connection between the point and the slope, the connection between the point and the given section, and the connection between the point and the survey station. We can describe the spatial coordinates of the survey and the connection in all directions in an all-round way by simply switching the interface.)