基于无人机三维重建的地表沉降监测技术

Ground Subsidence Monitoring Technology Based on UAV 3D Reconstruction

为解决传统依靠野外实测的监测方法周期长、成本高、常出现测量盲区的问题,本文提出了一种基于无人机三维重建的地表沉降监测方法,着重分析了影响无人机三维重建精度的内外因素,并从差分GPS技术引入、构架航线设计以及顾及系统误差补偿的光束法平差方法三方面对地表模型的生产精度加以改进,而后,利用三维重建模型实施地表沉降监测。实验结果表明,本文无人机三维重建方法所生产的地表模型精度较高,并能较好地应用于地表沉降监测当中,有效提升了工程效益。

In order to solve the problems of long period,high cost and frequent measurement blind area of traditional monitoring methods relying on field measurement,this paper proposes a surface subsidence monitoring method based on UAV 3D reconstruction,focuses on the internal and external factors affecting the accuracy of UAV 3D reconstruction,and introduces the framework route design and the bundle adjustment method considering systematic error compensation to improve the production accuracy of the surface model,and then uses the three-dimensional reconstruction model to monitor the surface subsidence.The experimental results show that the surface model produced by the UAV three-dimensional reconstruction method in this paper has high accuracy,can be better applied to the surface subsidence monitoring,and effectively improves the engineering benefits.