Vassilis Gikas

TL;DR: The use and explores the potential of laser scanning technology to accurately track excavation and construction activities of highway tunnels, with emphasis given on geo-referencing, mesh model generation and cross-section extraction.

TL;DR: In this paper, the authors studied the long-term (>30 years) settlement behavior of the Mornos dam on the basis of finite element analysis and vertical displacement data, and compared actually measured deformations resulting from a continuous geodetic monitoring record of the dam behavior with a numerical back analysis.

TL;DR: In this paper, a comprehensive statistical assessment of static PPP using GPS-only, GLONASS-only and GPS/GLONASS combined data was performed in a short (hourly to daily) and a long (several weeks) term, spanning observations from eleven IGS stations, revealing insignificant differences in the accuracy and repeatability among the three satellite constellation solutions for long (8 h, 24 h) observation times.

TL;DR: Testing the accuracy of the accelerometer and gyroscope sensors for a number of maneuvering events reveals high consistency between smartphones, whereas the small deviations from ground truth verify their high potential even for critical ITS safety applications.

TL;DR: In this paper, a novel approach for extracting the centerline geometry of road/railway alignments in the form of traditional design elements (i.e., straight lines, circle arcs, and clothoids) is described.