Geotechnical instruments are used widely as a complementary tool to geodetic methods in monitoring natural and man-made structures. This paper provides an overview of geotechnical instruments used in structural monitoring. The transducers commonly used in geotechnical instrumentation are first introduced. This is followed by an introduction of the various types of instruments including their wo...

NEXTRANS Project No. 125OSUY2.1 VARIATIONAL BAYES METHOD FOR ESTIMATING TRANSIT ROUTE OD FLOWS USING APC DATA By Rabi G. Mishalani, Principal Investigator Professor of Civil, Environmental, and Geodetic Engineering The Ohio State University [email protected] Mark R. McCord, co-Principal Investigator Professor of Civil, Environmental, and Geodetic Engineering The Ohio State University mccord.2@o...

Fault slip rate estimates along the Altyn Tagh and Kunlun strike-slip faults in northern Tibet vary considerably between short-term geodetic and long-term geologic studies. Here we reanalyze and model all global positioning system (GPS) data from northern Tibet to determine if these differences might be explained by previously unmodeled transient processes associated with the earthquake cycle, ...

Abstract The publicly available Earth Orientation Parameter (EOP) time series provided by the Centre of IERS (e.g., Bulletin A, 14 C04) result from combination individual space-geodetic solutions on a daily basis, i.e., parameter-level combination. Current activities Federal Agency for Cartography and Geodesy (BKG) focus development strategy, main objective which is to improve consistency betwe...

Abstract The existing LOng RAnge Naviating System stations are mostly used by marine users and situated at offshore, low‐altitude locations. As a result, the impact of height on system's positioning accuracy is usually ignored. However, direct transplantation calculation methods to high‐altitude areas will bring errors in results due lack elevation consideration. In order improve new enhanced L...

Let G be a connected graph and S ⊆ V (G). Then the Steiner distance of S, denoted by dG(S), is the smallest number of edges in a connected subgraph of G containing S. Such a subgraph is necessarily a tree called a Steiner tree for S. The Steiner interval for a set S of vertices in a graph, denoted by I (S) is the union of all vertices that belong to some Steiner tree for S. If S = {u, v}, then ...

Despite the technical progress monitoring stability of engineering structures remains one most difficult tasks in geodesy. This article presents deformation analysis according to Munich approach W. M. Welsch. The method deals with testing geodetic network's congruence, affinity selected triangles, and other kinematic parameters 2D networks. Deformation using can be performed X-method, which is ...

Prior research has shown that the currently deployed geodetic global positioning system (GPS) stations can be used to measure snow depth in an area around the antenna installation via GPS interferometric reflectometry (GPS-IR). Although such a technique provides the advantages of large spatial coverage and high temporal measurement sampling, there are also drawbacks in using geodetic equipment ...

For any two vertices u and v in a graph G (digraph D, respectively), a u − v geodesic is a shortest path between u and v (from u to v, respectively). Let I(u, v) denote the set of all vertices lying on a u− v geodesic. For a vertex subset S, let I(S) denote the union of all I(u, v) for u, v ∈ S. The geodetic number g(G) (g(D), respectively) of a graph G (digraph D, respectively) is the minimum ...