Journal of Surveying Engineering: Recent submissions
Now showing items 601-620 of 1001
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Integrating a Global Positioning System and Accelerometers to Monitor the Deflection of Bridges
(American Society of Civil Engineers, 2004)During the design phase of a bridge, certain characteristics are assumed, such as traffic and wind loading. In reality, however, these characteristics can vary, therefore it is very important that the health of such a ... -
Application of Multipath Template Technique to Real-Time Ionospheric Delay Estimation Using Global Positioning System Measurements
(American Society of Civil Engineers, 2004)When global positioning system (GPS) signals propagate through the ionosphere, they experience an extra time delay. The ionospheric delay can be estimated using -
New Method for Transforming Global Positioning System Height into Normal Height Based on Neural Network
(American Society of Civil Engineers, 2004)In China, normal height, which is the height above the geoid calculated using the mean normal gravity along the plumb line, is used in engineering applications. However, the adjusted global positioning system (GPS) height ... -
Geomatics Techniques for Structural Surveying
(American Society of Civil Engineers, 2004)Structural engineers may utilize geomatics techniques for precise and accurate measurements of discrete points, detailed façade recording, and the production of engineering drawings and plans. Techniques commonly used ... -
Development and Implementation of Temporal Land Information System
(American Society of Civil Engineers, 2004)An extended parcel-based land information system (LIS) was designed and implemented with respect to six additional major functional requirements: (1) incorporation of measurement data including measurement data retrieval, ... -
Comparison of Remove-Compute-Restore and University of New Brunswick Techniques to Geoid Determination over Australia, and Inclusion of Wiener-Type Filters in Reference Field Contribution
(American Society of Civil Engineers, 2004)The commonly adopted remove-compute-restore (RCR) technique for regional gravimetric geoid determination uses the maximum degree of a combined global geopotential model and regional gravity data via the spherical Stokes ... -
Transforming Positions and Velocities between the International Terrestrial Reference Frame of 2000 and North American Datum of 1983
(American Society of Civil Engineers, 2004)In December 2001, Natural Resources Canada and the U.S. National Geodetic Survey (NGS) jointly adopted values for a set of 14 parameters for transforming positional coordinates and velocities between the International ... -
Approach for Equivalent Accuracy Design of Different Types of Observations
(American Society of Civil Engineers, 2004)The equivalency of observations in geodetic networks is one of the most important problems in surveying engineering, which has not been seriously considered before. This means that different types of observations should, ... -
Spatial and Temporal Functional Requirements for an Extended Parcel-Based Land Information System
(American Society of Civil Engineers, 2004)The nature of cadastral data in the United States is dynamic from a temporal perspective and measurement-based from a spatial perspective. The fundamental characteristics have been comparatively ignored in the development ... -
Comparing Different Global Positioning System Data Processing Techniques for Modeling Residual Systematic Errors
(American Society of Civil Engineers, 2003)In the case of traditional Global Positioning System (GPS) data processing algorithms, systematic errors in GPS measurements cannot be eliminated completely, nor accounted for satisfactorily. These systematic errors can ... -
Geographic Information System Data for Supporting Feature Extraction from High-Resolution Aerial and Satellite Images
(American Society of Civil Engineers, 2003)This article presents some theoretical and practical aspects of using geographic information system (GIS) data to support feature extraction from high-resolution aerial and satellite images. GIS data have been used to ... -
Least-Squares Formula for Zero Error (Z0) of Electromagnetic Distance Measuring Instruments
(American Society of Civil Engineers, 2003)The zero error of electromagnetic distance measuring instruments is a near-constant systematic error, which has the same effect on the measured distances. This paper presents a least-squares formula for this correction ... -
Geometric Modeling Systems for Construction Surveying of Highway Tunnels
(American Society of Civil Engineers, 2003)This paper describes geometric modeling systems that are being applied with computer systems in construction surveying of highway tunnels. These modeling systems include sweeping, skinning, mesh generation, combined ... -
Efficient Algorithm for Inverse of the Fully Populated Covariance Matrix in Global Positioning System Relative Positioning
(American Society of Civil Engineers, 2004)Stochastic modeling of the global positioning system (GPS) residual errors yields a fully populated covariance matrix for the GPS carrier phase double difference observations. Implementing this fully populated covariance ... -
Steepest Descent Method for Representing Spatially Correlated Uncertainty in GIS
(American Society of Civil Engineers, 2003)All spatial data in a geographic information system (GIS) intrinsically contain uncertainty. Simulations could be used for many GIS applications in order to estimate confidence ranges of certain analyses and project ... -
Idempotence and Orthogonality in Relation to Mixed Model Adjustments
(American Society of Civil Engineers, 2003)The purpose of this paper is to look into several common idempotent matrices of interest in the context of any mixed model least-squares adjustment. The cofactor (scaled covariance) matrices, based on the law of error ... -
Ionosphere-Free Phase Combinations for Modernized GPS
(American Society of Civil Engineers, 2003)In this contribution, optimal ionosphere-free combinations for a modernized triple-frequency global positioning system (GPS) are derived. It is shown that these ionosphere-free combinations are directly related to the model ... -
Graphical Solution for Vertical Curve Computation
(American Society of Civil Engineers, 2003)Traditionally, highway vertical curve data have been calculated and tabulated for construction staking. The design drawing showed the parabola drawn using the calculated station-offset information. With the procedure ... -
Least Squares Fitting Method Based on Bivariate Nonuniform <i>B</i>-Spline and Its Applications in Surveying Engineering
(American Society of Civil Engineers, 2003)As a well-known numerical approximation method, the least squares fitting method is widely applied in surveying engineering. The most important and difficult problem in this method is to determine the type of base function ... -
Determination of Orthometric Height of NJI2 CORS Station
(American Society of Civil Engineers, 2003)Many surveyors use the network of global positioning system (GPS) Continuously Operating Reference Stations (CORS) as accurate “free” control monuments in their projects. The National Geodetic Survey (NGS) publishes and ...