Track positioning coordinate calculation method and device based on set-free flat station of total station

Abstract

The invention relates to a track positioning coordinate calculation method and device based on a set-free flat station of a total station. The method comprises the following steps: fixedly connectingthe total station with a track detector; arranging the track detector on a track motionlessly, carrying out measurement through the track detector so as to obtain a current mileage value and a currenthorizontal angle, carrying out measurement to obtain three-dimensional coordinate values of various CPIII control points under a total station coordinate system, and calculating through a set-free flat station algorithm to obtain a total station site coordinate; obtaining a first track design central line point and a second track design central line point being nearest to the current track position according to determination of the current mileage value, and carrying out calculation according to a three-dimensional coordinate of the first track design central line point and the second track design central line point to obtain a track directional angle and a slope angle; and carrying out calculation according to the track directional angle, the current horizontal angle and the slope angleto obtain a track central line coordinate under a geodetic coordinate system. According to the track positioning coordinate calculation method disclosed by the invention, the accuracy of the positioned coordinate can be improved, and the practical application demand can be met.

Description

technical field [0001] The invention relates to the technical field of engineering surveying, in particular to a method and device for calculating orbital positioning coordinates based on a total station without setting up horizontal stations. Background technique [0002] In the construction and maintenance of China's high-speed railways, ensuring that the lines have high positioning accuracy and high ride comfort accuracy is the core goal of high-speed railway measurement and fine-tuning. At present, my country's high-speed railway measurement and fine-tuning mainly adopt the absolute measurement mode based on the CPIII control network. This mode is represented by the passenger dedicated line track measuring instrument, which controls the absolute position of the track and the line alignment by measuring the three-dimensional coordinates of the track. The measurement process can be generally summarized as follows: leveling the total station on the tripod and setting up the...

AI Technical Summary

Problems solved by technology

[0005] Based on this, the purpose of the present invention is to solve the problem of low track positioning accuracy due to the azimuth error of station setup and angle measurement error of prism measurement in the prior art when using the "absolute + relative" measurement mode

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