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  • Quantification of landslide movement in a forested environment

    Creator:
    Conner, Jeremy C.
    Abstract:
    Landslides are an insidious natural hazard, which can result in significant damage to public infrastructure. Limited monitoring tools are available, particularly tools suitable for use in forested environments. These tools often only allow a few locations across the slide to be monitored. Terrestrial Laser Scanning (TLS) shows promise as a...
    Resource Type:
    Masters Thesis

  • Evaluation of straw wattle placement and surficial slope stability

    Creator:
    Rikli, Anthony M.
    Abstract:
    Straw wattles are common erosion control devices used to trap sediment. This thesis studies the relationship of straw wattles on slope stability through a case study demonstrating their use on steep slopes (1.5H:1V) for the US20 highway realignment project. Several surficial slope failures have occurred on these fill slopes, often...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Michael J. Olsen Straw wattles are common erosion control devices used to trap

  • Paving the way for terrestrial laser scanning assessment of road quality

    Creator:
    Chin, Abby
    Abstract:
    With the growing trend in use of 3D laser scanning technology for data collection, it is important to study the various potential applications of this revolutionary technology. One such application is the measurement of road roughness at both large and small scales. At larger extents, terrestrial laser scanning (TLS) is...
    Resource Type:
    Masters Thesis

  • Overcoming the level bubble : terrestrial laser scanning reference frame transformations

    Creator:
    Silvia, Evon P.
    Abstract:
    Terrestrial Laser Scanning (TLS) is an efficient, effective, and precise measurement tool rapidly growing in popularity in a wide variety of fields. Use of TLS data often requires aligning multiple scans for a more complete model of a scene or object, a procedure known as scan registration. Each scan setup...
    Resource Type:
    Masters Thesis

  • Investigation of Multi-constellation RTK GNSS Survey Productivity and Coordinate Accuracy

    Creator:
    Jamieson, Marian H.
    Abstract:
    This study evaluates the productivity and accuracy of surveys completed with single-base real-time kinematic (RTK) Global Navigation Satellite Systems (GNSS) using four different GNSS constellation combinations: (1) GPS-only, (2) GPS+GLONASS, (3) GPS+Galileo+BeiDou, and (4) GPS+GLONASS+Galileo+BeiDou. For this comparison, we set up a test site consisting of 20 stations ranging with...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: _____________________________________________________ Michael J. Olsen This study

  • An Efficient Point Cloud Processing Framework for Terrestrial and Mobile Lidar Data via Reconstructing the Scan Pattern Grid

    Creator:
    Che, Erzhuo
    Abstract:
    Lidar (LIght Detection And Ranging) is a remote sensing technology using light in the form of a pulsed laser, which enables efficient, accurate, 3-D data acquisition of a scene. Depending on the mounting platform, lidar data acquisition can be categorized into Airborne Laser Scanning (ALS, or airborne lidar), Terrestrial Laser...
    Resource Type:
    Dissertation
    Full Text:
    Michael J. Olsen Lidar (LIght Detection And Ranging) is a remote sensing technology using light in

  • Analysis of spatial data from terrain models for landslide predictive mapping

    Creator:
    Santha, Rubini
    Abstract:
    Landslides are a pervasive hazard that can result in substantial damage to properties and loss of life throughout the world. To understand the nature and scope of the hazard, landslide hazard mapping has been an area of intense research by identifying areas most susceptible to landslides in order to mitigate...
    Resource Type:
    Dissertation
    Full Text:
    Michael J. Olsen Landslides are a pervasive hazard that can result in substantial damage to properties

  • Rigorous 3D Point Cloud Quality Assessment

    Creator:
    O'Banion, Matthew S.
    Abstract:
    The capabilities of modern three-dimensional (3D) capture technology such as laser scanning and image-based 3D reconstruction are well suited to enhance the practice and research of civil engineering. However, given the often-overwhelming focus placed on the incredible capabilities of these tools and techniques, it is important to investigate the limitations...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Michael J. Olsen The capabilities of modern three-dimensional (3D) capture

  • Accuracy assessment of LiDAR point cloud geo-referencing

    Creator:
    Williams, Keith E.
    Abstract:
    Three-dimensional laser scanning has revolutionized spatial data acquisition and can be completed from a variety of platforms including airborne (ALS), mobile (MLS), and static terrestrial (TLS) laser scanning. MLS is a rapidly evolving technology that provides increases in efficiency and safety over static TLS, while still providing similar levels of...
    Resource Type:
    Masters Thesis
    Full Text:
    : __________________________________________________________ Michael J. Olsen Three-dimensional laser scanning has revolutionized spatial data

  • Accuracy Evaluation of Real-Time GNSS Survey Observations

    Creator:
    Allahyari, Mahsa
    Abstract:
    Real time networks (RTNs) have become popular for Global Navigation Satellite System (GNSS) surveys because highly accurate positions can be derived in seconds to minutes compared to hours as required with static sessions. To evaluate the accuracy of these shorter-duration, RTN GNSS observations and their potential for use as a...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Michael J. Olsen Real time networks (RTNs) have become popular for Global Navigation