A field day was performed which including our entire team spread into 5 teams of 4 along with 2 members from WestLAND Group, Inc. The 5 teams walked to predetermined locations in order to take surveying data and to leave behind markers for an aerial survey.
During the field day. 4 nearby benchmarks were used to reference the rest of the points that were recorded. Once these benchmarks were used, the 5 teams split off with their own Trimble R10 setups (shown on the left) in order to take the elevations and locations of 25 predetermined points across Spadra farm using GPS. Along with recording the elevations of these 25 points, the teams were asked to leave behind a metal button pinned into the ground as well as white flags in a cross for an aerial survey to be conducted.
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The aerial survey was done with a DJI Phantom 4 Pro which was flown by WestLAND Group, Inc. They assisted us in the drone work which lasted about an hour as the drone needed to fly over and pick up all 25 placed targets that were previously pinned by us. The flight path of the drone is shown on the left.
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Using the surveying data collected during the field day itself, we are able to consolidate and produce visual data that we can then use to design from. Using context capture and aerotriangulation, we combined 1051 photos to produce a DSM (digital surface map) and an orthophoto. The image on the left shows the TIN (Triangulated Irregular Network) surface and reveals the contours of the land. For our surface, we used a 1 foot contour.