基于经纬仪的光束平差法定向方法改进

针对基于传统经纬仪工业测量系统使用光束平差法定向精度有待提高的问题，提出一种新的定向改进方法。该方法同时结合了精确互瞄法与光束平差法，简化了测量过程，提出新的约束，消减了光束平差法中定向阶段的基准点测量累积误差，实现了在非通视条件中完成多台经纬仪高精度定向的目标。试验数据表明：该方法可在10m范围内，在误差为±3″的测点交会精度下，维持0.1mm的定向精度。

Improvement of Bundle Adjustment Orientation Model based on Theodolite

To improve accuracy of bundle adjustment model used in theodolite industrial measurement system,a new orientation method is devised based on mutual collimation model and bundle adjustment model.In this method,new constraints are established to reduce accumulated datum point measurement errors.After a simulation experiment,our finding indicates that this method has maintained the orientation accuracy of 0.1 millimeter with sighting error smaller than 3 arc seconds within 10 meters under intervisibility difficult condition.