DATA PROCESSING IN PRECISION SURVEYING OF BALLASTLESS TRACK HIGH-SPEED RAILWAY
无碴轨道高速铁路精密测量数据处理

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.