Enhancing Precise Point Positioning Under Active Ionosphere Using Wide-Range Ionospheric Corrections Derived from MADOCA Service
Source abstract
Abstract
The performance of the MADOCA-PPP (Multi-GNSS Orbit and Clock Augmentation-Precise Point Positioning) wide-range ionospheric correction requires further investigation during periods of high ionospheric activity, particularly regarding its impact on the convergence time and positioning accuracy of both PPP and PPP with Ambiguity Resolution (PPP-AR). Thus, the present study selects the month with the highest average Kp index between January 2023 and May 2025 and conducts positioning analyses at nine stations. Results indicate that applying wide-range ionospheric corrections reduces PPP convergence time by 47% in static mode and 54% in kinematic mode. When these corrections are integrated into PPP-AR, they shorten the convergence time by 69% in static mode and 72% in kinematic mode. Moreover, PPP-AR enhanced with wide-range ionospheric corrections achieves the highest positioning accuracy across both modes: in static mode, the horizontal and vertical root mean square errors (RMSEs) are approximately 5.2 cm and 6.9 cm, respectively, while in kinematic mode, these values are 5.6 cm and 8.0 cm. These findings demonstrate that the wide-range ionospheric corrections provided by the MADOCA-PPP service effectively enhance PPP performance during periods of heightened ionospheric activity.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: GNSS positioning and interference · Advanced Frequency and Time Standards · Soil Moisture and Remote Sensing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Geographical Sciences, Changchun Normal University, Changchun 130032, China
College of Environment and Resource Sciences, Zhejiang A&F University, Hangzhou 311300, China
Funding
Zhejiang Provincial Natural Science Foundation · Science and Technology Research Project of the Department of Education of Jilin Province
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