Journal of Surveying Engineering: Recent submissions
Now showing items 381-400 of 1001
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New Network RTK Based on Transparent Reference Selection in Absolute Positioning Mode
(American Society of Civil Engineers, 2013)In this paper, the network real-time kinematic (NRTK) positioning method based on undifferenced (UD) observation corrections (abbreviated as URTK) are described, in which instantaneous ambiguity resolution can be carried ... -
Alternative Solutions for Horizontal Circular Curves by Noniterative Methods
(American Society of Civil Engineers, 2013)The most common type of horizontal curves used to connect intersecting straight sections of highways and other infrastructures are circular curves. Given the radius and the deflection angle of a horizontal circular curve, ... -
GPS-Based Real-Time Guidance Information System for Marine Pier Construction
(American Society of Civil Engineers, 2013)Pile positioning, for driving piles below the surface of water in a marine pier construction project, is typically a time-consuming task owing to the fact that the pile wharf is affected significantly by environmental ... -
GPS and GLONASS Static and Kinematic PPP Results
(American Society of Civil Engineers, 2013)Precise point positioning (PPP) involves observations from a single global navigation satellite system (GNSS) receiver and benefits of satellite orbit and clock products obtained from the global infrastructure of permanent ... -
Application of the Sign-Constrained Robust Least-Squares Method to Surveying Networks
(American Society of Civil Engineers, 2013)The least-squares (LS) method is highly susceptible to outlying observations. For this reason, various types of robust estimators have been developed; for example, -
Closure to “An Improved Weighted Total Least Squares Method with Applications in Linear Fitting and Coordinate Transformation” by Xiaohua Tong, Yanmin Jin, and Lingyun Li
(American Society of Civil Engineers, 2013) -
New Fast Precise Kinematic Surveying Method Using a Single Dual-Frequency GPS Receiver
(American Society of Civil Engineers, 2013)As of this writing, there are two popular methods to perform precise surveying using the single dual-frequency Global Positioning System (GPS) receiver. One is the Real-Time Kinematic (RTK) technique. The other is the ... -
Real-Time Precise Point Positioning in NAD83: Global and Regional Broadcast Corrections Compared
(American Society of Civil Engineers, 2013)Real-time precise point positioning (PPP) is possible through the availability of the real-time satellite orbit and clock corrections to broadcast ephemeris, the real-time broadcast corrections (BCs). The real-time BCs are ... -
Hinged, Pseudo-Grid Triangulation Method for Long, Near-Linear Cliff Analyses
(American Society of Civil Engineers, 2013)Light detection and ranging (LIDAR) scanners can rapidly collect high-resolution, centimeter-level-accurate point clouds representing topography, suitable for change detection if scans are repeated over time. To perform ... -
Proposal for Geoid Model Evaluation from GNSS-INS/Leveling Data: Case Study along a Railway Line in Greece
(American Society of Civil Engineers, 2013)A surveying-engineering procedure is presented for gravimetric geoid model verification along selected railway traverse lines using collocated ellipsoid and orthometric heights. The proposed method relies on (1) a ... -
GPS-Based Single-Epoch Attitude Determination without Prior Knowledge of Measurement Precision
(American Society of Civil Engineers, 2013)During attitude determination using the Global Positioning System (GPS), incomplete knowledge of the stochastic model of the observables often occurs in realistic applications, resulting in the failure of the traditional ... -
Weakly Multicollinear Datum Transformations
(American Society of Civil Engineers, 2012)Geodetic network design and optimization is a very well-known concept in geodesy. However, in many cases, the available geodetic network configuration with respect to the estimation model is insufficient because of the ... -
Operational Considerations for Terrestrial Laser Scanner Use in Highway Construction Applications
(American Society of Civil Engineers, 2012)A 2010 survey of terrestrial laser scanner (TLS) usage among state highway agencies indicated that TLS is being increasingly used for highway construction applications among transportation agencies in the United States and ... -
Discussion of “An Improved Weighted Total Least Squares Method with Applications in Linear Fitting and Coordinate Transformation”by Xiaohua Tong, Yanmin Jin, and Lingyun Li
(American Society of Civil Engineers, 2013) -
Single-Frequency Integer Ambiguity Resolution Enabled GPS Precise Point Positioning
(American Society of Civil Engineers, 2012)High-precision (centimeter-level) real-time kinematic precise point positioning (PPP-RTK) becomes feasible when using precise corrections, as received from a regional Continuously Operating Reference Station network. These ... -
Evolution of NAD 83 in the United States: Journey from 2D toward 4D
(American Society of Civil Engineers, 2012)In 1986, Canada, Greenland, and the United States adopted the North American Datum of 1983 (NAD 83) to replace the North American Datum of 1927 as their official spatial reference system for geometric positioning. The rigor ... -
Basic Concepts of Optimization and Design of Geodetic Networks
(American Society of Civil Engineers, 2012)This contribution reviews a few basic concepts of optimization and design of a geodetic network. Proper assessment and analysis of networks is an important task in many geodetic-surveying projects. Appropriate quality-control ... -
Estimation of Focal Length Variations of a 100-m Radio Telescope’s Main Reflector by Laser Scanner Measurements
(American Society of Civil Engineers, 2012)Due to gravitation, the main reflector of a radio telescope underlies a deformation that causes a change in focal length depending on the variations of the elevation angle of the telescope. To estimate these gravity dependent ... -
OPUS for Horizontal Subcentimeter-Accuracy Landslide Monitoring: Case Study in the Puerto Rico and Virgin Islands Region
(American Society of Civil Engineers, 2012)This study demonstrates the usefulness of an approach based on the Online Positioning User Service (OPUS) provided by the National Geodetic Survey (NGS) of the National Oceanic and Atmospheric Administration (NOAA) to ... -
New Median Approach to Define Configuration Weakness of Deformation Networks
(American Society of Civil Engineers, 2012)The main problem in conventional deformation analysis (CDA) is that if there is more than one displaced point in a given monitoring network, the least-squares estimation (LSE) smears the disturbing effects of the displaced ...