测量机器人2C机理及测量对策

Mechanism and Countermeasure of GeoRobot's 2C Error

在高速铁路CPⅢ平面控制测量等应用中,存在方向组内各观测点边长差异较大的情况。当采用测量机器人进行自动化数据采集时,经常出现一测回内长短边之间水平角2C互差超限的问题,严重影响作业效率。通过对2C误差的产生机理、测量机器人自动照准原理及其远近效应进行分析,针对2C误差的不同影响因素进行试验验证,提出方向观测法中观测数据质量控制指标检核的改进建议。

During the application of CPⅢ plane control survey in high speed railway,there exists a large distance deviation between observation points in every direction. When GeoRobot is used to collect the data automatically,the 2C error between the long and short sides in one measuring-circle can be beyond the limit,which will seriously affect the working efficiency.By analyzing the mechanism of 2C and ATR error,and examining it with experiments,this paper proposes some suggestions for improvement in quality examination of obeservation data,which increases the efficiency of field work under the premise of satisfying the measurement precision.