PS U (Chapter II, Evans Dissertation)

This is drone product set U from Chapter II of Alexandra's dissertation.<br>The orthomosaic and DSM show the Bellamy downstream mill area in Dover, NH, USA. The imagery was collected on August 16, 2019 using a DJI Phantom 3 Professional drone. Note that the elevation values are only reliable for examining relative topography across the site. The built-in drone GPS was used for georeferencing during SfM processing, and the EXIF data provided inaccurate altitude measurements. The XY locations are more reliable based on checks against alignment with base maps in ArcGIS. The drone PS' relative accuracy was deemed acceptable for the purposes in Chapter II. Automated drone flight paths were used to collect nadir and angled aerial images with sufficient image overlap for SfM processing in Agisoft PhotoScan Professional. The PhotoScan-generated report includes additional details on the SfM processing workflow and on the drone products.<br>Please see Alexandra's dissertation (University of New Hampshire) for more information on the drone products and project.<br>These materials were made using resources from an NSF EPSCoR funded project “RII Track-2 FEC: Strengthening the scientific basis for decision-making about dams: Multi-scale, coupled-systems research on ecological, social, and economic trade-offs” (a.k.a. "Future of Dams"). Support for this project is provided by the National Science Foundation’s Research Infrastructure Improvement NSF #IIA-1539071. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.