Between August 2016 and January 2017, a very energetic seismic sequence induced substantial horizontal vertical ground displacements in the Central Italian Apennines. After this event, Military Geographical Institute (IGM), owner manager of geodetic networks, executed several topographic surveys earthquake area order to update coordinates vertices belonging IGM95 network. The measurements began...

The Continuous Very Long Baseline Interferometry (VLBI) campaign 2017 (CONT17) differs from previous CONT campaigns as there are three independent networks observing in parallel; two legacy VLBI S/X band (Legacy-1 and Legacy-2) one VGOS (the next generation system: VLBI2010) network broadbrand. Co-located radio telescopes across the could be combined to strengthen geodetic solutions CONT17 by u...

This paper deals with the problem of geodetic monitoring structures by means permanent GNSS stations, a focus on specific project bridge small network three stations. What is peculiar about this that stations used are endowed low-cost receivers, and data treated continuously cover time-span more than 4 years. The service GeoGuard, at work project, has proved to be reliable in terms both hardwar...

The Procrustean “matching bed” is employed here to provide direct solution to the 9-parameter transformation problem inherent in geodesy, navigation, computer vision and medicine. By computing the centre of mass coordinates of two given systems; scale, translation and rotation parameters are optimised using the Frobenius norm. To demonstrate the Procrustean approach, three simulated and one rea...

This paper describes a new approach to the problem of the structural research of clusters based on the theory of geodetic and k-geodetic graphs. We firmly believe that this same approach can be used when solving problems of correlation between structural and spectral metrics in complex networks. So, what we want to point out is about the possibility of applying one theory of networks (the theor...

We show that the geodetic number of proper interval graphs can be computed in polynomial time. This problem is NP-hard on chordal graphs and on bipartite weakly chordal graphs. Only an upper bound on the geodetic number of proper interval graphs has been known prior to

This paper presents a study to evaluate the comparative positioning accuracy of Surface Vehicle (SV) using Dead Reckoning (DR), Geodetic Least-Squares Adjustment (GLSA), Robust (GRA), and External Kalman Filter (EKF) methods. involved simulating results navigational measurements subject errors (including gross errors) used position SV swimming along given trajectory in vicinity three beacons. W...

Due to the relative lack of empirical field data, the response of very small glaciers (<0.5 km) to current atmospheric warming is not fully understood yet. Investigating their mass balance is a prerequisite to fill this knowledge gap. Application of the direct glaciological method is one option. Since most recently, terrestrial laser scanning (TLS) techniques operating in the near infrared rang...

In our standard geodetic VLBI solutions, we estimate the positions of quasars assuming that their positions do not vary in time. However, in solutions estimating proper motion, a significant number of quasars show apparent proper motion greater than 50 μas/yr. For individual quasars, there are source structure effects that cause apparent proper motion. To examine how coherent the pattern of app...