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http://dx.doi.org/10.12652/Ksce.2014.34.1.0341

An Instantaneous Integer Ambiguity Resolution for GPS Real-Time Structure Monitoring  

Lee, Hungkyu (Changwon National University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.34, no.1, 2014 , pp. 341-353 More about this Journal
Abstract
In order to deliver a centimeter-level kinematic positioning solution with GPS carrier-phase measurements, it is prerequisite to use correctly resolved integer ambiguities. Based on the mathematical modeling of GPS network with application of its geometrical constraints, this research has investigated an instantaneous ambiguity resolution procedure for the so-called 'integer constrained least-squares' technique which can be effectively implemented in real-time structure monitoring. In this process, algorithms of quality control for the float solutions and hypothesis tests using the constrained baseline for the ambiguity validation are included to enhance reliability of the solutions. The proposed procedure has been implemented by MATLAB, the language of technical computing, and processed field trial data obtained at a cable-stayed bridge to access its real-world applicability. The results are summarized in terms of ambiguity successful rates, impact of the stochastical models, and computation time to demonstrate performance of the instantaneous ambiguity resolution proposed.
Keywords
Global positioning system(GPS); Structure monitoring; Ambiguity resolution; Mathematical modeling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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