基于无人机倾斜摄影测量技术的大坝地形图测绘方法

Dam Topographic Mapping Method Based on UA V Tilt Photogrammetry Technology

大坝地形图测绘存在测绘误差大、耗时长,导致测绘效果不佳的问题,针对该问题,提出基于无人机倾斜摄影测量技术的大坝地形图测绘方法。采用航线法对像控点布设,利用六旋翼无人机搭载摄像机对大坝地形倾斜摄影测量,设置无人机测量参数,计算飞行高度,采集大坝地形图像信息,将采集的信息输入SCSG2000软件,生成大坝地形图,计算观测点坐标误差,通过该误差纠正大坝地形图,实现大坝地形图测绘。经实验证明,设计方法测绘误差比较小,而且测绘耗时比较短,具有良好的应用前景。

The surveying and mapping of dam topographic map has the problems of large surveying error and long period,which lead to poor surveying effect.To solve these problems,a dam topographic map mapping method based on UAV tilt photogrammetry technology is proposed.The route method is adopted to lay out the image control points,and the six-rotor UAV equipped with a camera is used to carry out photogrammetry of the dam topographic inclination.The measurement parameters of the UAV are set.The flight height is calculated.And the dam topographic image information is collected.The collected information is input into the SCSC2000 software to generate the dam topographic map.The coordinate error of the observation point is calculated.The dam topographic map is corrected by the error.Finally,the dam topographic map mapping is realized.It is proved by experiments that the surveying error of the design method is relatively small,and the surveying and mapping time is relatively short,which has a good application prospect.