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- 航空发动机叶片超声C扫三维成像技术的应用研究
- 作者： 王昊 来源： 兰州理工大学 年份： 2019 文献类型 ： 学位论文 关键词： 超声C扫 单层叶片 边界点提取 成像检测 法向量估计 三维重建
- 描述： 航空发动机叶片超声C扫三维成像技术的应用研究
- Characterization of the Fels Landslide (Alaska) Using Combined Terrestrial, Aerial, and Satellite Remote Sensing Data
- 作者： Davide Donati Doug Stead Bernhard Rabus Jeanine Engelbrecht John J. Clague Stephen D. Newman Mirko Francioni 来源： Remote Sensing 年份： 2023 文献类型 ： 期刊 关键词： Motion multisensor SAR Analysis LiDAR displacement from landslide monitoring characterization structure
- 描述： The characterization of landslides located in remote areas poses significant challenges due to the costs of reaching the sites and the lack of reliable subsurface data to constrain geological interpretations. In this paper, the advantages of combining field and remote sensing techniques to investigate the deformation and stability of rock slopes are demonstrated. The characterization of the Fels landslide, a large, slowly deforming rock slope in central Alaska, is described. Historical aerial imagery is used to highlight the relationship between glacier retreat and developing instability. Airborne laser scanning (ALS) and Structure-from-Motion (SfM) datasets are used to investigate the structural geological setting of the landslide, revealing a good agreement between structural discontinuities at the outcrop and slope scales. The magnitude, plunge, and direction of slope surface displacements and their changes over time are studied using a multi-temporal synthetic aperture radar speckle-tracking (SAR ST) dataset. The analyses show an increase in displacement rates (i.e., an acceleration of the movement) between 2010 and 2020. Significant spatial variations of displacement direction and plunge are noted and correlated with the morphology of the failure surface reconstructed using the vector inclination method (VIM). In particular, steeper displacement vectors were reconstructed in the upper slope, compared to the central part, thus suggesting a change in basal surface morphology, which is largely controlled by rock mass foliation. Through this analytical approach, the Fels landslide is shown to be a slow-moving, compound rockslide, the displacement of which is controlled by structural geological features and promoted by glacier retreat.
- 在高海拔地区实施航空摄影测量的关键技术
- 作者： 徐兹正 张金良 杨风学 王潇 来源： 石油天然气勘察技术中心站第二十八次技术交流研讨会 年份： 2020 文献类型 ： 会议论文 关键词： 高海拔 LiDAR 影像匹配 Terrasolid 数字调绘平板 ADS 多数据源 精密星历 PhotoMOD Pix4D 80 INPHO Xpro
- 描述： 在高海拔地区实施航空摄影测量的关键技术
- 在高海拔地区实施航空摄影测量的关键技术
- 作者： 徐兹正 张金良 杨风学 王潇 来源： 石油天然气勘察技术中心站第二十八次技术交流研讨会 年份： 2020 文献类型 ： 会议论文 关键词： 高海拔 LiDAR 影像匹配 Terrasolid 数字调绘平板 ADS 多数据源 精密星历 PhotoMOD Pix4D 80 INPHO Xpro
- 描述： 在高海拔地区实施航空摄影测量的关键技术