面向大高差露天矿山监测的无人机航摄设计研究
Study on route planning for UAV in open-pit mine monitoring with large height difference terrain
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摘要:
针对大高差露天矿山的地形特点, 基于矿山粗略地形, 分析了相机参数、像片参数和飞行参数的相关性, 建立了相对航高和地面分辨率、实际重叠度与预设重叠度、飞行速度和曝光间隔之间的数学模型, 推导出相应的计算公式。 在常规航摄设计基础上, 提出了一套改进的无人机航摄设计方法, 并通过实验进行对比验证。 研究结果表明, 相对于常规摄影测量航摄设计, 本文提出的方法既能有效避免航摄漏洞, 提高航摄质量, 又能避免盲目提高重叠度造成的数据冗余和多余工作量, 更好地满足大高差露天矿山遥感监测需求。
Abstract:According to the topographic characteristics of open-pit mines with large elevation difference, based on the rough terrain of the mine, the correlation of camera parameters, images parameters and flight parameters are analyzed.The mathematical models of relative altitude and the ground resolution, real overlap and preset overlap, flight speed and exposure interval are established.The corresponding calculation formula is derived.On the basis of conventional aerial photography design, a set of improved design method for UAV is proposed.The method is compared and contrast.The results show that compared with the conventional photogrammetric design, the method proposed in this paper can effectively avoid aerial photography loopholes and improve the quality, and the data redundancy and redundant workload by blindly increasing the overlap are averted.The requirement of remote sensing monitoring in open-pit mine with large height difference had been met.
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