无人机航测在矿山井田区域地形图测绘中的应用

Application of UAV Aerial Survey in Regional Topographic Mapping for Mine Field

根据无人机航空摄影测量的技术特点,结合坪上煤业公司井田区域地形图更新,首先设计了无人机航测系统在地形测量中的技术流程;然后选用纵横CW-10C无人机和索尼A7R相机,结合坪上煤业公司的工程实际进行外业生产;最后使用uFeature3D采集系统进行内业测图,并进行精度检查。结果表明,本文方法生产的地形图地物点平面位置中误差为0.2 m,高程中误差为0.21 m,满足1∶2000地形图测量的要求,测图周期缩短了1/3,GPS辅助空中三角测量加以PPS差分提高精度,减少了2/3相控点;裸眼立体采集降低了硬件门槛,提高了成图效率;为复杂地形矿区地形图测量项目提供了的解决方案。

According to the technical characteristics of UAV aerial photogrammetry,combined with the topographic map update of Pingshang Coal Mining Company’s mine field area,this work first designed the technical process of UAV aerial survey system in a topographic survey.Then the CW-10C UAV and SONY A7R camera were selected to carry out field production combined with the engineering practice of Pingshang Coal Industry Company.Finally,the uFeature3D acquisition system was used for mapping and accuracy check.The results show that the median error of the topographic map produced by this method is 0.2 m,and the median error of the elevation is 0.21 m,which meets the requirements of 1∶2000 topographic map survey.The mapping period is shortened by 1/3,the precision of GPS assisted aerial triangulation is improved by PPS difference,and the phase control points are reduced by 2/3.Naked eye stereo acquisition reduces the hardware threshold and improves the mapping efficiency.It provides a solution for topographic map survey projects of complex terrain mining areas.