无人机1∶500比例尺测图关键影响因素分析及应用研究

Key Factors Analysis and Application Research of 1∶500-Scale Mapping of UAV

对影响无人机航测成图精度的关键因素进行分析,从影像质量、飞行姿态、地面控制和机载POS以及畸变模型几个方面展开讨论,对提高成图精度的措施进行了论述。基于飞马F300无人机航摄系统选取三个不同地形区域进行成图试验,表明在影像质量好、飞行姿态稳定、地面控制点布设合理和机载POS精度高的情况下,应用合适的格网畸变模型,可以有效保证航测成图的精度,完全可以满足1∶500成图精度要求。

This paper analyzed the key factors affecting the accuracy of unmanned aerial vehicle(UAV) aerial photography technology. The image quality,flight attitude,ground control,and in-flight POS and distortion model were discussed. The measures to improve the precision of mapping were indicated. Based on the aerial photography system of the F300 UAV,three different topographic areas were selected for mapping test,which indicated that under the conditions of good image quality,stable flight attitude,reasonable ground control points and high accuracy of airborne POS,and the application of appropriate grid distortion model can effectively guarantee the accuracy of aerial mapping,and can fully meet the requirements of 1∶500 mapping accuracy.