偏心分量误差对POS解算和激光点云精度影响试验分析

Experimental analysis of the influence of eccentric component error on POS solution and laser point cloud accuracy

自21世纪开始,机载航空摄影的POS系统集成了GNSS定位技术和惯性导航技术,可以在航空摄影过程中直接获取位置信息和姿态信息,经过解算能够得到高精度的6个外方位元素。如果精度能够满足摄影测量的要求,就可以直接用于地理定位,打破了传统的作业模式,大大减少野外的工作量,缩短航测项目周期,这也使得航测成果的精度取决于POS系统的精度。

Since the 21st century,the POS system of airborne aerial photography has integrated GNSS positioning technology and inertial navigation technology,which can directly obtain position information and attitude information in the process of aerial photography.After solving,six external azimuth elements with high precision can be obtained.If the accuracy can meet the requirements of photogrammetry,it can be directly used for geographic positioning.It breaks the traditional operation mode,greatly reduces the workload in the field,and shortens the aerial survey project cycle.This also makes the accuracy of aerial survey results dependent on the accuracy of the POS system.