title: Real-time Kinematic Positioning of INS Tightly Aided Multi-GNSS Ionospheric Constrained PPP.
abstract: Real-time Precise Point Positioning (PPP) technique is being widely applied for providing precise positioning services with the significant improvement on satellite precise products accuracy. With the rapid development of the multi-constellation Global Navigation Satellite Systems (multi-GNSS), currently, about 80 navigation satellites are operational in orbit. Obviously, PPP performance is dramatically improved with all satellites compared to that of GPS-only PPP. However, the performance of PPP could be evidently affected by unexpected and unavoidable severe observing environments, especially in the dynamic applications. Consequently, we apply Inertial Navigation System (INS) to the Ionospheric-Constrained (IC) PPP to overcome such drawbacks. The INS tightly aided multi-GNSS IC-PPP model can make full use of GNSS and INS observations to improve the PPP performance in terms of accuracy, availability, continuity, and convergence speed. Then, a set of airborne data is analyzed to evaluate and validate the improvement of multi-GNSS and INS on the performance of IC-PPP.
authors.affiliation: School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China.|GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China.|German Research Centre for Geosciences (GFZ), Telegrafenberg, Potsdam 14473, Germany.
authors.forename: Zhouzheng
authors.initials: Z
authors.lastname: Gao
authors.affiliation: School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China.
authors.forename: Wenbin
authors.initials: W
authors.lastname: Shen
authors.affiliation: GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China.
authors.forename: Hongping
authors.initials: H
authors.lastname: Zhang
authors.affiliation: GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China.
authors.forename: Xiaoji
authors.initials: X
authors.lastname: Niu
authors.affiliation: German Research Centre for Geosciences (GFZ), Telegrafenberg, Potsdam 14473, Germany.
authors.forename: Maorong
authors.initials: M
authors.lastname: Ge