基准站设置对POS系统定位精度的影响
Influence of GPS Base Station on Accuracy of Positioning by Airborne Position and Orientation System
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摘要: 利用实际航摄资料分析了地面基准站设置对机载POS系统定位精度的影响,比较了利用其定位结果进行POS辅助空中三角测量和直接对地目标定位的精度。实验表明,架设GPS基准站可以明显提高POS系统定位的高程精度,无地面基准站的POS系统定位结果可满足1∶50000小比例尺航测成图的精度要求。Abstract: The influence of GPS base station on positioning accuracy by using airborne position and orientation system (POS) is discussed, and the accuracy of POS-supported aerial triangulation is compared with that of direct georeferencing. The experiment results have verified that the setup of GPS base station can significantly improve height accuracy of positioning by POS. POS Positioning without GPS base station can meet the specification of topographic mapping at small scale under 1∶50 000.
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