加测有陀螺定向边的地下精密导线精度分析

摘要

根据测量误差传播规律,通过严密平差过程,本文推导了地下直伸型精密导线加测单个、多个及每边加测陀螺定向边后的横向误差估算公式,通过模拟计算得出了加测单个陀螺定向边位置以导线2/3处为最佳、多个陀螺定向边以均匀分布为最佳;提高陀螺定向精度,不但可以提高导线布设精度,且可以节约导线布设成本.%Based on the propagation of measurement error,with rigorous adjustment,as the ground precision traverse plus single,multiple and gyro direction side measurements on each side,pateral estimation formula,Obtained by simulation plus measured edge best position of a single gyro direction side to lead 2 / 3,more uniform distribution is to best;improve the precision of gyro direction,not only can improve the precision of traverse layout,and can save the cost of laying.