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Implementing SRIF filter with MANS-PPP software package for GNSS precise point position solution accuracy enhancement

  • Ashraf G. Shehata EMAIL logo , Fawzi H. Zarzoura and Mahmoud El-Mewafi
Published/Copyright: May 1, 2023
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Abstract

One of the primary geodetic mapping tasks in the post-processing of GNSS data is precise point positioning (PPP). Research institutions and universities have established software packages and online PPP services in prior years. Still, it is problematic to satisfy the high-rate update criterion of PPP due to the quick growth of GNSS constellations. In PPP GNSS data processing, Square Root Information Filter SRIF is not frequently handled. In this research, we used the MANS-PPP software package to execute the processing method and generate the PPP GNSS solution. The new program has been demonstrated how can effectively enhance initial time and positioning error for multi-GNSS satellites. Processing observation data with the Kalman filter and SRIF was performed using PPP in static mode for the 16 stations, and the influence of errors has been analyzed from the filtering method. The Kalman filter was unable to maintain a stable convergence curve during the PPP filtering procedure, but SRIF was successful in doing so. Based on these findings, SRIF had better numerical stability and was well-suited for settings with PPP demanding precision computing environments.


Corresponding author: Ashraf G. Shehata, Civil Engineering Department, Delta University for Science and Technology, Gamsaa 35712, Egypt, E-mail:

Acknowledgement

We acknowledge IGS for providing the GNSS data and products.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2023-03-19
Accepted: 2023-04-05
Published Online: 2023-05-01
Published in Print: 2023-10-26

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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