Study on Improving Accuracy of Track Long-wave Irregularity Measured by Semi-observation Method(Ⅰ)

作者：Xiong, Lijuan; Zhu, Hongtao; Wang, Zhiyong; Wu, Weijun; Wei, Hui

来源：Journal of the China Railway Society, 2019, 41(6): 130-136.

DOI：10.3969/j.issn.1001-8360.2019.06.018

• Earth rotation
• Earth's rotation
• High
• speed railways
• Long-wave irregularities
• Observation method
• Real-time compensations
• Semi-observation
• Static detections

The most relevant static detection data with the ride quality of high-speed railway is its long-wave data. Among all the long-wave measurement methods, the semi-observation method of relative survey will have the best engineering practicability if its long-wave measurement accuracy can be improved. In this paper, based on the analysis of the factors that influence the long-wave measurement accuracy of the semi-observation me-thod, and the consideration on the incomplete compensation of the earth's rotation component in the measurement as the main reason for its low accuracy, a mathematical model for its real-time earth-rotation compensation was proposed. In the current experiments, real-time compensation was made to the semi-observation method according to the line design data, which corrected the error induced by the incomplete earth-rotation compensation, and returned the long-wave error of the semi-observation to the allowable value within 3 mm. The study indicates that the real-time earth-rotation compensation is effective and practical in improving the long-wave measurement accuracy of the semi-observation method.

• 单位
  江西科技学院; 南昌航空大学