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Article

Inversion Method of Tidal Level Based on GNSS Triple-Frequency, Geometry-Free, Non-Ionospheric Phase Combination

1
School of Information Engineering, Nanchang University, Nanchang 330031, China
2
College of Software, Jiangxi Normal University, Nanchang 330022, China
*
Author to whom correspondence should be addressed.
Academic Editor: Atsushi Mase
Received: 20 April 2022 / Revised: 10 May 2022 / Accepted: 12 May 2022 / Published: 14 May 2022
(This article belongs to the Topic Multi-Sensor Integrated Navigation Systems)
Using the navigation signal transmitted by GNSS (global navigation satellite system), satellites for tide level monitoring comprise one of the important research fields of GNSS marine remote sensing. Regarding the problem that GNSS-MR (multipath reflectometry) technology only uses carrier SNR (signal noise ratio) data, resulting in the lack of SNR data for early CORS (continuously operating reference stations) stations, it is impossible to carry out tide level inversion. In this paper, a method of tide level inversion based on triple-frequency geometric ionospheric free combined-phase observations instead of SNR is proposed. The simultaneous interpretation of GNSS satellite observations from the sc02 station in Friday Harbor in the US is carried out and compared with the traditional GNSS-IR (interference and reflectometry) tide-inversion method. The experimental results show that the tide level inversion method proposed in this paper has the same tide level trend as the measured tide level trend. The accuracy evaluation shows that the RMSE value of tide level inversion is 15 cm and the correlation coefficient r is 0.984, which verifies the effectiveness of this method for tide level monitoring and expands the method of GNSS tide-level monitoring. View Full-Text
Keywords: global navigation satellite system; tide level monitoring; multipath effect; GNSS-MR; triple-frequency; geometry-free; ionospheric phase combination global navigation satellite system; tide level monitoring; multipath effect; GNSS-MR; triple-frequency; geometry-free; ionospheric phase combination
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MDPI and ACS Style

You, G.; Guo, H.; Wu, J.; Yu, M. Inversion Method of Tidal Level Based on GNSS Triple-Frequency, Geometry-Free, Non-Ionospheric Phase Combination. Appl. Sci. 2022, 12, 4983. https://0-doi-org.brum.beds.ac.uk/10.3390/app12104983

AMA Style

You G, Guo H, Wu J, Yu M. Inversion Method of Tidal Level Based on GNSS Triple-Frequency, Geometry-Free, Non-Ionospheric Phase Combination. Applied Sciences. 2022; 12(10):4983. https://0-doi-org.brum.beds.ac.uk/10.3390/app12104983

Chicago/Turabian Style

You, Gaochong, Hang Guo, Jianfeng Wu, and Min Yu. 2022. "Inversion Method of Tidal Level Based on GNSS Triple-Frequency, Geometry-Free, Non-Ionospheric Phase Combination" Applied Sciences 12, no. 10: 4983. https://0-doi-org.brum.beds.ac.uk/10.3390/app12104983

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