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http://dx.doi.org/10.7848/ksgpc.2015.33.2.131

Implementation of a Kinematic Network-Based Single-Frequency GPS Measurement Model and Its Simulation Tests for Precise Positioning and Attitude Determination of Surveying Vessel  

Hungkyu, Lee (School of Civil, Environmental and Chemical Engineering, Changwon National University)
Siwan, Lyu (School of Civil, Environmental and Chemical Engineering, Changwon National University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.33, no.2, 2015 , pp. 131-142 More about this Journal
Abstract
In order to support the development of a cost-effective river bathymetric system, this research has focused on modeling GPS observables, which are obtained by array of five single-frequency receivers (i.e., two references and three rovers) to estimate the high accurate kinematic position, and the surveying vessel altitude. Also, by applying all GPS measurements as multiple-baselines with constraining rover baselines, we derived the socalled ‘kinematic network model.’ From the model, the integer-constrained least-squares (LS) for position estimation and the implicit LS for attitude determination were implemented, while a series of simulation tests with respect to the baseline lengths around 2km performed to demonstrate its accuracy analysis. The on-the-fly (OTF) ambiguity resolution tests revealed that ninety-nine percents of time-to-fix-first ambiguity (TTFF) can be decided in less than two seconds, when the positioning accuracy of ambiguity-fixed solutions was assessed as the greater than or equal to one and two centimeters in horizontal and vertical, respectively. Comparing to the GPS-derived attitudes, the achievable accuracy gradually descended in sequence of yaw, pitch and roll due to the antenna geometric configuration. Furthermore, the RMSE values for the baseline lengths of three to six meters were within ±1′for yaw, and less than ±10′and ±20′for pitch and roll, respectively, but those of between six to fifteen meters were less than ±1′for yaw, ±5′for pitch, and ±10′for roll.
Keywords
GPS; Measurement Modeling; Kinematic Positioning; Attitude Determination;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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