摘要
提出一种适合无碴轨道高速铁路精密工程测量的数据处理方法:先采用拟稳平差选择兼容的起算点,然后应用间接平差模型平差;在平差过程中,用Baarda粗差探测的方法逐个剔除粗差,再用Helmert方差分量估计方法合理地确定边、角的权比。计算结果表明:该方法能有效地提高控制网平差精度和可靠性。
A data processing method for the precision surveying of ballastless track high-speed railway is put forward ： first, choosing the compatible points in the control network by quasi-stable adjustment, then, adjusting the control network with the adjustment model of indirect observation in which the Baarda gross errors detection and Helmert variance component estimation are used. This kind of software for precision surveying data processing has been developed and tested by use of real surveying data. The data processing results show that the adjustment accuracy and reliability of the control network can be improved with this method.
出处
《大地测量与地球动力学》
CSCD
北大核心
2008年第1期114-117,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40674003)
关键词
无碴轨道高速铁路
间接平差
拟稳平差
粗差探测
方差分量估计
ballastless track high-speed railway
adjustment of indirect observations
steady balancing adjustment
gross errors detection
variance component estimation
