Progress of Ocean Tide Loading Inversion Based on GNSS

LIU Jingnan; ZHANG Huayi; LIU Yanxiong; CHEN Wu; ZHOU Xinghua

doi:10.13203/j.whugis20150621

Volume 41 Issue 1

Jan. 2016

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Geomatics and Information Science of Wuhan University > 2016 > 41(1): 9-14. > DOI: 10.13203/j.whugis20150621

LIU Jingnan, ZHANG Huayi, LIU Yanxiong, CHEN Wu, ZHOU Xinghua. Progress of Ocean Tide Loading Inversion Based on GNSS[J]. Geomatics and Information Science of Wuhan University, 2016, 41(1): 9-14. DOI: 10.13203/j.whugis20150621

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Progress of Ocean Tide Loading Inversion Based on GNSS

1.
School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2.
The First Institute of Oceanography, SOA, Qingdao 266061, China;
3.
The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China

Funds: The National Natural Science Foundation of China, No. 41374044.

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Received Date: October 12, 2015
Published Date: January 04, 2016

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Abstract

Abstract

OTL(ocean tide loading) displacement inversion based on GNSS has a unique advantage given the rapid development of GNSS technology. It is more convenient, economic, accurate, and faster in comparison to gravity and VLBI (very long baseline interferometry) measurement on ocean tide loading. We conduct a systematic review on the progress of GNSS ocean loading research as this approach has drawn a lot of attention at home and abroad. We introduce the OTL displacement model for improving the accuracy of GNSS positioning, and obtain ocean tide loading information using GNSS. We point out the problems existing in the current OTL displacement models (the overall accuracy of the model is low, especially in the shallow water area) and the drawbacks of GNSS OTL displacement inversion methods (the emergence of pseudo anniversary, the existence of the system errors and the coupling effect between some tidal constituent and GNSS residual errors).
- ocean tide loading,
- ocean tide loading displacement,
- ocean tide model,
- shallow water effect,
- GNSS residual errors

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