The Optimization Of High-speed Railway CP? Control Network And Data Processing

In recent years,the projects of high-speed railway are increasing with each passing day.High speed railway track adjustment becomes more and more prominent in high speed railway construction,The quality of track finishing work directly determines the high ride comfort of high speed railway track.,which is based on CPIII measuring,Its precision directly determines the quality of the work of fine tuning.And the labor is becoming more and more heavy,how to ensure the accuracy and improve efficiency is a new problem.Therefore,In this paper,the optimization of CPIII control network and data processing are studied.This paper first briefly introduces the based knowledge of CPI,CP?,CP?,And then put forward for conventional CPIII high iron control survey network optimization method,namely:measuring station spacing still is about 120m;every free station measures 2 x 4 of CPIII control point(the conjunction of CP? and CP? control points are not included);adjacent measure repeated observations of CP? point station,and the simulation of this method is carried out.Then,a method is proposed to replace the conventional high precision leveling measurement with the trigonometric leveling in the middle method.Finally,the optimization program,combined with the measured data,through the preparation of the Matlab program,can meet the requirements of the high-speed railway engineering survey,and has a profound significance in improving efficiency of labor.