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Qualitative and quantitative comparative analyses of 3D lidar landslide displacement field measurements.

机译:3D激光雷达滑坡位移场测量的定性和定量比较分析。

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摘要

Landslide ground surface displacements vary at all spatial scales and are an essential component of kinematic and hazards analyses. Unfortunately, survey-based displacement measurements require personnel to enter unsafe terrain and have limited spatial resolution. And while recent advancements in LiDAR technology provide the ability remotely measure 3D landslide displacements at high spatial resolution, no single method is widely accepted. A series of qualitative metrics for comparing 3D landslide displacement field measurement methods were developed. The metrics were then applied to nine existing LiDAR techniques, and the top-ranking methods --Iterative Closest Point (ICP) matching and 3D Particle Image Velocimetry (3DPIV) -- were quantitatively compared using synthetic displacement and control survey data from a slow-moving translational landslide in north-central Colorado. 3DPIV was shown to be the most accurate and reliable point cloud-based 3D landslide displacement field measurement method, and the viability of LiDAR-based techniques for measuring 3D motion on landslides was demonstrated.
机译:滑坡地表位移在所有空间尺度上都是变化的,并且是运动学和危害分析的重要组成部分。不幸的是,基于调查的位移测量要求人员进入不安全的地形并且空间分辨率有限。而且,尽管LiDAR技术的最新进展提供了以高空间分辨率远程测量3D滑坡位移的能力,但没有一种方法被广泛接受。开发了一系列用于比较3D滑坡位移场测量方法的定性指标。然后将这些指标应用于9种现有的LiDAR技术,并使用合成位移和对照调查数据(从慢速运动在科罗拉多州中北部移动平移滑坡。 3DPIV被证明是最精确,最可靠的基于点云的3D滑坡位移场测量方法,并且证明了基于LiDAR的技术在滑坡上测量3D运动的可行性。

著录项

  • 作者

    Haugen, Benjamin D.;

  • 作者单位

    Colorado School of Mines.;

  • 授予单位 Colorado School of Mines.;
  • 学科 Geological engineering.;Geomorphology.;Remote sensing.
  • 学位 M.S.
  • 年度 2016
  • 页码 153 p.
  • 总页数 153
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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