无人机低空摄影测量在DOM制作中的应用研究

Application of UAV Low-Altitude Photogrammetry in DOM Production

无人机高精度航测技术迅速发展,使数据获取效率以及数据获取精度大大提高。采用固定翼无人机平台ZW-3B低空无人机及与之配套的载荷、地面控制设备,在飞行前对设备进行测试和航线规划、采集测区信息,对现场勘察后采集了研究区域范围内的野外数据,获取了该区域范围满足精度要求的影像资料和数据信息。通过Pix4Dmapper软件进行空中三角测量获得初图,然后对数据做镶嵌线编辑等后期工作,最终获得了1∶1 000DOM成果图,分析了其精度,所得影像满足精度需求。该方法相对于传统方法更加安全简洁,获取的数据精度高,最终结果表明该方法在数字正射影像的制作中是可行的。

The development of high precision of aerial photogrammetry technology improving the efficiency and precision for the data acquisition.Using the fixed wing unmanned aerial vehicle platform ZW-3 Band the supporting load and ground control equipment,the equipment was tested before the flight.The survey area information is collected.The field data is collected in the area after the investigation of the field,and the image data and data information are obtained to meet the precision of the area.Through Pix4 Dmapper software,the image pre-processing and the aerial triangulation are obtained,then the later processing is carried out,and the results of the 1∶1 000 DOM are obtained,and the accuracy is analyzed.This method is more safety and conciseness than the traditionally,and can be acquire higher data precision,which proved that the method is practicable for the generation of DOM.