Show simple item record

dc.contributor.authorCunningham, Keith
dc.contributor.authorOlsen, Michael J.
dc.contributor.authorWartman, Joseph
dc.date.accessioned2019-04-05T22:35:05Z
dc.date.available2019-04-05T22:35:05Z
dc.date.issued2016
dc.identifier.urihttp://hdl.handle.net/1773/43507
dc.description.abstractAn assessment of unmanned aircraft systems (UAS) concluded that current, off-the-shelf UAS aircraft and cameras can be effective for creating the digital surface models used to evaluate rock-slope stability and landslide risk along transportation corridors. The imagery collected with UAS can be processed using a photogrammetry technique called Structure-from-Motion (SfM) which generates a point cloud and surface model, similar to terrestrial laser scanning (TLS). We treated the TLS data as our control, or “truth,” because TLS is a mature and well-proven technology. The comparisons of the TLS surfaces and the SFM surfaces were impressive – if not comparable in many cases. Thus, the SfM surface models would be suitable for deriving slope morphology to generate rockfall activity indices (RAI) for landslide assessment. This research also revealed that UAS are a safer alternative to the deployment and operation of TLS operating on a road shoulder because UAS can be launched and recovered from a remote location and capable of imaging without flying directly over the road. However, both the UAS and TLS approaches still require traditional survey control and photo targets to accurately georeference their respective digital surface models.en_US
dc.description.sponsorshipPacific Northwest Transportation Consortiumen_US
dc.language.isoen_USen_US
dc.subjectTransportation Safetyen_US
dc.subjectResearch Managementen_US
dc.subjectPlanningen_US
dc.subjectInnovationen_US
dc.subjectMaintenance Practiceen_US
dc.subjectMathematical Analysisen_US
dc.subjectGeometryen_US
dc.subjectStatistical Analysisen_US
dc.subjectRisk Assessmenten_US
dc.subjectSlope Stabilityen_US
dc.subjectLaser Scanningen_US
dc.subjectLidaren_US
dc.subjectMobile Mappingen_US
dc.subjectRockfall Energy Indexen_US
dc.subjectHighwaysen_US
dc.titleUnmanned Aircraft System Assessment of Landslide Safety for Transportation Corridorsen_US
dc.typeTechnical Reporten_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record