WingtraOne and Septentrio GNSS Receivers Team Up to Provide 3D
WingtraOne and Septentrio GNSS Receivers Team Up to Provide 3D Positioning Accuracy for Avalanche Prevention
November 7th, 2019 by Susan Smith
Avalanches can be extremely dangerous especially for off-piste skiers as well as for small towns situated below the slopes. As ski season comes upon us, it’s a good idea to check the avalanche conditions of the ski slopes you plan on frequenting. There are over 1000 avalanches occurring every year in the Swiss Alps alone. Local communities put up steel fence barriers along the slopes to prevent avalanches from encroaching near their town. To build such snow barriers, steep rock faces and cliffs need to be surveyed with utmost precision.
Swiss-based survey and mapping company Darnuzer Ingenieure AG has the expertise in surveying snowy peaks such as those above the famous resort town of Davos, located in the Swiss Alps near the Austrian border. Above the city, towers the magnificent Schiahorn mountain, its slopes lined with pistes and chairlifts. To protect the town and the skiers, Davos community plans to build avalanche barriers along the steep slopes. The ideal location is along one square kilometer on the Parsenn slope, right above a ski piste. To plan the works along this uneven rock face, a detailed 3D reconstruction of the area is needed. Their WingtraOne, fixed-winged drone features a top-quality camera, combined with a Septentrio high-performance GGNSS receiver,* according to company materials. It can fly at 150 m altitude making orthophotos without the need of GCPs (Ground Control Points) or a real-time base station link. GCPs are markings on the ground with a known location, used as a positioning reference when making orthophotos. Placing...