Data processing in precise surveying of control network for ballastless track of high-speed railway
Zhou Dong-wei · Cehui kexue · 2013
Construction of the ballastless track of high-speed railway demands control network III(CPIII) for high-precise survey and control with a relative accuracy not larger than one millimeter among neighboring points and a re-measuring accuracy not larger than three millimeters.It is essential to do some researches on data processing approach in the precise surveying because the existing data processing approaches cannot satisfy the surveying coordinates and accuracy of this large-scale and high-precise construct control network with the high smooth of track.Based on the characteristics of CPIII survey engineering,an approach that is appropriate for the precise surveying of control network for ballastless track was proposed in this paper,whereafter an experiment was carried out to analyze and prove the correctness of the proposed approach with the real data collected in some high-speed railway of China.The results showed that the proposed approach could effectively enhance the accuracy,reliability and computing efficiency of the adjustment of control network for ballastless track of high-speed railway.