InSARTrac Field Tests—Combining Computer Vision and Terrestrial InSAR for 3D Displacement Monitoring

InSARTrac is an innovative method for 3D displacement monitoring that combines terrestrial interferometric synthetic aperture radar (InSAR) and computer vision-based feature tracking. The measurements obtained are considered far superior to 1D or 2D data facilitate evaluations concerning the mechanisms controlling kinematics. This study presents results of at Mölltal Glacier in Carinthia, Austria. duration glacier was four weeks involved two instrument setup positions obtain comparative supraglacial rock debris from different angles without utilizing retroreflectors. mean rate resultant vector 22 mm/day includes ~11 downgradient ice surface direction 6 18 vertically downward. Additionally, entire measured three times using a LIDAR-equipped UAV, revealing vertical displacements 16 mm/day. indicate accuracy 4.2 ppm, which 27% lower than initial controlled tests field test demonstrates capability provide meaningful debris. material monitored has texture reflectivity similar certain classes landslides, glaciers, other alpine processes, indicating promising applications variety geologic phenomena.