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http://dx.doi.org/10.7848/ksgpc.2012.30.5.459

Assessment of Positioning Accuracy based on Medium- and Long-range GPS L1 Relative Positioning using Regional Ionospheric Grid Model  

Son, Eun-Seong (인하대학교 사회기반시스템공학부 지리정보공학과)
Won, Jihye (인하대학교 사회기반시스템공학부 지리정보공학과)
Park, Kwan-Dong (인하대학교 사회기반시스템공학부 지리정보공학과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.30, no.5, 2012 , pp. 459-466 More about this Journal
Abstract
The ionospheric delay is the largest error source in GPS positioning after the SA effect has been turned off. The ionospheric error can be easily removed by using ionospheric-free combinations but it is only restricted for dual-frequency receivers. Therefore, in this study, the regional ionospheric grid model was developed for single-frequency receivers. The developed model was compared with GIM to validate its accuracy. As a result, it yielded RMSE of 3.8 TECU for 10 days. And L1 medium- and long-range relative positioning was performed to evaluate positioning accuracy improvements. The positioning accuracy was improved by 46.7% compared with that without any correction of ionosphere and troposphere and was improved by 14.5% compared with that only tropospheric correction.
Keywords
Regional Ionospheric Grid Model; Single-frequency Relative Positioning;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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