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http://dx.doi.org/10.12673/jant.2018.22.5.375

Correlation between the Position Accuracy of the Network RTK Rover and Quality Indicator of Various Performance Analysis Method  

Lim, Cheol-soon (Aerospace Engineering, Sejong University)
Park, Byung-woon (Aerospace Engineering, Sejong University)
Heo, Moon-beom (Navigation R&D Division, Korea Aerospace Research Institute)
Publication Information
Journal of Advanced Navigation Technology / v.22, no.5, 2018 , pp. 375-383 More about this Journal
Abstract
In order to apply the Network RTK (real time kinematics) technology, which has been used for positioning of stationary points, to the navigation of vehicles, its infrastructure should provide correction data with a quality indicator that can show the expected accuracy in real time. In this paper, we analyzed various indicator generation algorithms such as I95 (ionospheric index 95) / G95 (geodetic index 95), SBI (semivariance based index) and RIU (residual interpolation uncertainty). We also applied them to the raw observables from the reference stations of National Geographic Information Institute and VRS (virtual reference station) users, and then examined its feasibility to be used as a real-time performance index of the Network RTK rover. 24 hour data analysis shows that the RIU index, which can represent the non-linearty of the correction, has the strongest correlation with the Network RTK rover accuracy. Therefore, RIU index is expected to be used as a real-time performance index of the Network RTK rover.
Keywords
Network RTK; Position accuracy; Quality indicator; Spatial decorrelation; Residual analysis;
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