Effects of Ionospheric Delay on the Position Accuracy of GNSS Receiver: A Case Study at Burdwan University, India
- DOI
- 10.2991/978-94-6463-644-4_16How to use a DOI?
- Keywords
- ionosphere; delay; GNSS; position; accuracy; performance
- Abstract
The effects of ionospheric delay (ionodelay) on the positioning accuracy of GNSS receivers at the University of Burdwan, India are presented. One (1) Hz dual-frequency GPS constellation data were logged for 24 h each day for a few days during the autumn season in October 2022 and the spring season in March 2023 using Leica GR 50 standard survey geodetic receiver and the logged files data were converted to Rinex observation data using RTKLIB converting software. GPS-GOPI software was used to obtain the Total Electron Content (TEC), the satellite bias (DCBsati), the receiver bias (DCBrx) and some other parameters that were used to estimate the ionodelay. The accuracy of position solution of the GNSS receiver on each observation day were determined through standard statistical estimate vis a vis Distance Root Mean Square (2DRMS), Circle Error Probable (CEP), Spherical Error Probable (SEP) and Mean Radial Spherical Error (MRSE) with use of GNSS positioning accuracy analysis tool (GLB GSOL software) and the results obtained were compared with each day ionodelay. The results of the analyses obtained reveal variations in TEC over observation days. The impacts of ionodelay on GPS PRN #6, PRN #7, PRN #10, and PRN #26 were determined on each day. Findings revealed that the TEC density along the satellites signal paths and visibility hours cause ionodelays of varying magnitude. It was observed that ionodelay was more prevalent on days characterized by solar and geomagnetic storms. The comparison of results reveals that the observation days in March 2023 were more susceptible to severe ionodelay than the observation days in October 2022, which might have been caused by the approach of the solar cycle towards its maximum equinox in March 2023. The accuracy of position solution of the receiver determined offline via 2DRMS, CEP, SEP, and RMSE shows more accurate values of position metrics in October 2022 than March 2023 at the same reference coordinate (RC) location using the same receiver. The 2D position solutions obtained show that the solutions for days with less ionodelay are more accurate than solutions for days with high ionodelay. Therefore, this study established the effects of ionospheric delay on the GNSS receivers’ accuracy and its dependence on season.
- Copyright
- © 2025 The Author(s)
- Open Access
- Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
Cite this article
TY - CONF AU - Adewumi Adebayo Segun AU - Sukabya Dan AU - Rajkumar Mandal AU - Anindya Bose PY - 2025 DA - 2025/02/04 TI - Effects of Ionospheric Delay on the Position Accuracy of GNSS Receiver: A Case Study at Burdwan University, India BT - Proceedings of the 8th URSI-NG Annual Conference (URSI-NG 2024) PB - Atlantis Press SP - 168 EP - 174 SN - 2352-541X UR - https://doi.org/10.2991/978-94-6463-644-4_16 DO - 10.2991/978-94-6463-644-4_16 ID - Segun2025 ER -