Direct MSTID mitigation in precise GPS processing
Manuel Hernández-Pajares , Paweł Wielgosz , Jacek Paziewski , Anna Krypiak-Gregorczyk , Marta Krukowska , Katarzyna Stępniak , Jan Kapłon , Tomasz Hadaś , Krzysztof Sośnica , Jarosław Bosy , Raul Orus-Perez , Enric Monte-Moreno , Heng Yang , Alberto Garcia-Rigo , Germán Olivares-Pulido
AbstractIn this paper, the authors summarize a simple and efficient approach developed to mitigate the problem in precise Global Navigation Satellite Systems (GNSS) positioning originated by the most frequent ionospheric wave signatures: the medium-scale traveling ionospheric disturbances (MSTIDs). The direct GNSS Ionospheric Interferometry technique (hereinafter dGII), presented in this paper, is applied for correcting MSTID effects on precise Real Time Kinematic (RTK) and tropospheric determination. It consists of the evolution of the former climatic Differential Delay Mitigation Model for MSTIDs (DMTID), for real-time conditions, using ionospheric data from a single permanent receiver only. The performance is demonstrated with networks of GNSS receivers in Poland, treated as users under real-time conditions, during two representative days in winter and summer seasons (days 353 and 168 of year 2013). In range domain, dGII typically reduces the ionospheric delay error up to 10–90% of the value when the MSTID mitigation model is not applied. The main dGII impact on precise positioning is that we can obtain reliable RTK position faster. In particular, the ambiguity success rate parameter increases, from 74% to 83%, with respect to the original uncorrected observations. The average of time to first fix is shortened from 30 s to 13 s. The improvement in troposphere estimaton, due to any potential impact of the MSTID mitigation model, was most difficult to demonstrate.
|Journal series||Radio Science, ISSN 0048-6604, (A 20 pkt)|
|Publication size in sheets||0.8|
|Keywords in Polish||Global Navigation Satellite System; smedium-scale traveling ionospheric disturbances|
|ASJC Classification||; ;|
|Score||= 20.0, 17-08-2020, ArticleFromJournal|
|Publication indicators||= 8; = 9; : 2017 = 0.872; : 2017 = 1.418 (2) - 2017=1.618 (5)|
|Citation count*||15 (2020-09-19)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.