Journal of Positioning, Navigation, and Timing (J Position Navig Timing; JPNT)
Citation: Yun, S., Lee, H., 2023, Analyzing Characteristics of GPS Dual-frequency SPP Techniques by Introducing the L2C Signal, Journal of Positioning, Navigation, and Timing, 12, 157-166.
Journal of Positioning, Navigation, and Timing (J Position Navig Timing) 2023 June, Volume 12, Issue 2, pages 157-166. https://doi.org/10.11003/JPNT.2023.12.2.157
Received on 08 May 2023, Revised on 26 May 2023, Accepted on 03 June 2023, Published on 30 June 2023.
License: Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/bync/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Seonghyeon Yun1, Hungkyu Lee2†
1Ocean and Maritime Digital Technology Research Division, Korea Research Institute of Ships & Ocean Engineering (KRISO), Daejeon 34103, Korea
2Department of Civil Engineering, Changwon National University, Changwon 51140, Korea
†Corresponding Author: E-mail, hkyulee@changwon.ac.kr; Tel: +82-55-213-3777 Fax: +82-55-285-9491
Several experiments were carried out to analyze the impact of the modernized Global Positioning System (GPS) L2C signal on pseudorange-based point positioning. Three dual-frequency positioning algorithms, ionosphere-free linear combination, ionospheric error estimation, and simple integration, were used, and the results were compared with those of Standard Point Positioning (SPP). An analysis was conducted to determine the characteristics of each dual-frequency positioning method, the impact of the magnitude of ionospheric error, and receiver grade. Ionosphere-free and ionospheric error estimation methods can provide improved positioning accuracy relative to SPP because they are able to significantly reduce the ionospheric error. However, this result was possible only when the ionospheric error reduction effect was greater than the disadvantage of these dual-frequency positioning algorithms such as the increment of multipath and noise, impact of uncertainty of unknown parameter estimation. The RMSE of the simple integration algorithm was larger than that of SPP, because of the remaining ionospheric error. Even though the receiver grade was different, similar results were observed.
L2C, GPS modernization, dual-frequency, point positioning, accuracy
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Conceptualization, H.L. and S.Y; methodology, H.L. and S.Y.; software, S.Y.; validation, H.L.; formal analysis, Y.S.; investigation, H.L. and Y.S.; data curation, Y.S.; writingoriginal draft preparation, Y.S.; writing-review and editing, H.L. and Y.S.; visualization, Y.S.; supervision, H.L.
The authors declare no conflict of interest.