Journal of Surveying Engineering: Recent submissions
Now showing items 401-420 of 1001
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Approximation of the Curvature of the Parthenon Stylobate Using Least Squares Techniques
(American Society of Civil Engineers, 2012)The subtle curves of the masterpiece of ancient Greece, the Athenian Parthenon, have been the object of many investigations of scientists of various disciplines. A lot of discussion has centered on the shape of the monument’s ... -
Accuracy Evaluation of Terrestrial LIDAR and Multibeam Sonar Systems Mounted on a Survey Vessel
(American Society of Civil Engineers, 2012)This research provides a performance test of terrestrial light detection and ranging (LIDAR) and multibeam echo sounder scanners integrated with Global Navigation Satellite System/Inertial Navigation System positioning and ... -
Sensitivity Analysis for the Principal Strain Parameters of a Deformation Monitoring Network
(American Society of Civil Engineers, 2012)Strain tensor analysis plays an essential role in geophysics and engineering applications, because it provides a numerical measure on the relative deformation behavior of the object under investigation. A strain tensor can ... -
Structural Deflection Measurement with a Range Camera
(American Society of Civil Engineers, 2012)Range cameras offer great potential for the measurement of structural deformations because of their ability to directly measure video sequences of three-dimensional coordinates of entire surfaces, their compactness, and ... -
Identifying the Relationship between GPS Data Quality and Positioning Precision: Case Study on IGS Tracking Stations
(American Society of Civil Engineers, 2012)The number of global positioning system (GPS) tracking stations is increasing, primarily because the stations are multifunctional. In civil engineering, they can be used for precision positioning; in the earth sciences, ... -
Discussion of “Rigorous Estimation of Local Accuracies” by Tomás Soler and Dru Smith
(American Society of Civil Engineers, 2012) -
To Level or Not to Level: Laser Scanner Inclination Sensor Stability and Application
(American Society of Civil Engineers, 2012)Many modern terrestrial laser scanners (TLSs) are equipped with inclination/tilt sensors—also referred to as level compensators—that can correct out-of-level imperfections in an instrument setup. Some users elect to disable ... -
Rejuvenating Pre-GPS Era Geophysical Surveys Using The National Map
(American Society of Civil Engineers, 2012)Old geophysical surveys [pre–Global Positioning System (GPS)] stand as valuable, largely untapped sources of scientific data. If data from these surveys were in a format that had reasonable accuracy, availability, and ease ... -
Road Construction Earthwork Volume Calculation Using Three-Dimensional Laser Scanning
(American Society of Civil Engineers, 2012)Terrestrial laser-scanning (TLS) technology can be used to create a detailed model before and after construction to determine earthwork quantities. Cost-effective implementation of this technology requires that field ... -
Local Accuracies
(American Society of Civil Engineers, 2012)The objective of this case study is to evaluate the different approximations in the technical literature that are used to compute the variance-covariance matrix of local accuracies. This analysis compares the rigor and ... -
Use of a Single L1 GPS Receiver for Monitoring Structures: First Results of the Detection of Millimetric Dynamic Oscillations
(American Society of Civil Engineers, 2012)This paper presents preliminary results to determine small displacements of a global positioning system (GPS) antenna fastened to a structure using only one L1 GPS receiver. Vibrations, periodic or not, are common in large ... -
Closure to “Rigorous Estimation of Local Accuracies” by Tomás Soler and Dru Smith
(American Society of Civil Engineers, 2012) -
Estimating 3D Volume Using Finite Elements for Pit Excavation
(American Society of Civil Engineers, 2012)In studies related to ground excavations, glaciers, human brains, or many other branches of science, a need to know often arises regarding the volume of an irregularly shaped object or region in 3D space. An approach using ... -
Power of Global Test in Deformation Analysis
(American Society of Civil Engineers, 2012)There are two kinds of global test procedures in deformation analysis; -
Continuous Monitoring of an Ice Sheet in a Reservoir Upstream of Beaumont Dam, Canada
(American Society of Civil Engineers, 2012)The geomatics engineering contributions to continuous three-dimensional monitoring of ice sheet in a dam reservoir is presented in this paper. A total station robot was used to monitor the displacement of several probes ... -
Solving the Direct and Inverse Geodetic Problems on the Ellipsoid by Numerical Integration
(American Society of Civil Engineers, 2012)Taking advantage of numerical integration, we solve the direct and inverse geodetic problems on the ellipsoid. In general, the solutions are composed of a strict solution for the sphere plus a correction to the ellipsoid ... -
Estimation of the Shift between Parameters of Functional Models of Geodetic Observations by Applying Msplit Estimation
(American Society of Civil Engineers, 2012)This paper presents a new method of estimating a shift between parameters of a functional model of observations. The method in question is based on the theory of -
Robust Algorithm for Registration of Building Point Clouds Using Planar Patches
(American Society of Civil Engineers, 2012)This paper presents a robust algorithm for the registration of building point clouds based on the planar features when there are no targets in the scanning process. First, obtaining the normal vectors of the planes that ... -
Closed-Form Solution for Relative Rotations between Image Pairs Using Normal Vectors of Epipolar Planes
(American Society of Civil Engineers, 2012)Determining the spatial relations between image and object spaces is an essential concern in photogrammetric applications. One such routine practice is to find the relative orientations between image pairs so that images ... -
Second Order Design of Geodetic Networks by the Simulated Annealing Method
(American Society of Civil Engineers, 2011)The problem of determining the required precision in observations in order to obtain a desired precision in final parameters, classically known as the second order design problem, is revisited in this paper and proposed ...