Retrieval of Ocean Wave Characteristics via Single-Frequency Time-Differenced Carrier Phases From GNSS Buoys

doi:10.1109/TGRS.2024.3378161

IOCAS-IR > 海洋环流与波动重点实验室

	Retrieval of Ocean Wave Characteristics via Single-Frequency Time-Differenced Carrier Phases From GNSS Buoys
	Yang, Lei 1,2; Xu, Yongsheng1,3,4 ; Jiang, Yingming 5; Mertikas, Stelios P.6; Wang, Zhiyong 7; Zhu, Lin 8; Liu, Na 2; Lin, Lina 2
	2024
发表期刊	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN	0196-2892
卷号	62 页码:12
通讯作者	Xu, Yongsheng(yongsheng.xu@qdio.ac.cn)
摘要	To address challenges in large-scale deployments and real-time wave observations using Global Navigation Satel-lite System (GNSS) buoys, we assessed the reliability and precision of the single-frequency L1 time-differenced carrier phase (TDCP) method for determining significant wave heights(SWHs) and average wave periods. Utilizing simulated dynamic velocity measurements derived from International GNSS Ser-vice static observations, this study demonstrates that the L1TDCP method exhibits superior performance compared to dual-frequency TDCP, postprocessed kinematic (PPK), and Doppler algorithms. Notably, L1 TDCP achieves approximately five times greater precision than the Doppler method in vertical direction assessments. In the offshore waters of Qingdao, China, we deployed two GNSS buoys for wave observation experiments, complemented by a nearby accelerometer-equipped wave buoy(WB) for external validation. By integrating the velocity measurements obtained from L1 TDCP, we derived the sea surface displacement, which, after applying a high-pass filter, isolated the wave components. The experimental results confirmed a strong correlation between L1 TDCP and PPK methods in capturing SWH and wave periods. This study found a negligible difference between L1 TDCP and PPK in SWH (0 +/- 7.1 mm,99% correlation) and in average wave period (0 +/- 0.13 s, 97%correlation). The wave observations from two independent GNSS buoys at the same location also exhibited remarkable consistency, with a difference in SWH of 0.0 +/- 2.5 cm and in average wave period of 0.0 +/- 0.1s. Compared to the independent WB, the L1 TDCP method demonstrated a difference in SWH of-1.9 +/- 5.8 cm with a 93% correlation and in average period of 0 +/- 0.1 s with a 94% correlation. Further, our analysis into GNSS data sampling frequencies highlighted the efficacy of 1-HzGNSS data in wave inversion though certain spectral limitations were noted. Implementing the L1 TDCP method at 1 Hz offers a substantial reduction in associated hardware costs, storage requirements, and computational demands. Notably, in contrast to PPK, it negates the need for delayed precise ephemeris, facilitating real-time computations. This study highlights the potential of L1 TDCP for broader, real-time GNSS buoy wave observations, harmonizing with the United Nations Decade of Ocean Science's aspirations for an augmented Global Ocean Observing System.
关键词	Global Navigation Satellite System (GNSS) buoy ocean wave significant wave height (SWH) time-differenced carrier phases (TDCPs)
DOI	10.1109/TGRS.2024.3378161
收录类别	SCI
语种	英语
资助项目	Laoshan Laboratory Science and Technology Innovation Projects
WOS研究方向	Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001206028600002
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS关键词	SURFACE-WAVES ; GPS ; CALIBRATION ; ACCURACY ; GLONASS ; TOPEX ; PPP
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185547
专题	海洋环流与波动重点实验室
通讯作者	Xu, Yongsheng
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Observat & Forecasting, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China 3.Laoshan Lab, Lab Ocean & Climate Dynam, Qingdao 266237, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Shandong Agr & Engn Univ, Coll Land Resources & Surveying & Mapping Engn, Jinan 250100, Peoples R China 6.Tech Univ Crete, Geodesy & Geomatics Engn Lab, Khania 73100, Greece 7.Minist Nat Resources, North China Sea Marine Forecasting & Hazard Mitiga, Qingdao 266100, Peoples R China 8.Qilu Univ Technol, Inst Oceanog Instrumentat, Shandong Acad Sci, Qingdao 266001, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yang, Lei,Xu, Yongsheng,Jiang, Yingming,et al. Retrieval of Ocean Wave Characteristics via Single-Frequency Time-Differenced Carrier Phases From GNSS Buoys[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2024,62:12.
APA	Yang, Lei.,Xu, Yongsheng.,Jiang, Yingming.,Mertikas, Stelios P..,Wang, Zhiyong.,...&Lin, Lina.(2024).Retrieval of Ocean Wave Characteristics via Single-Frequency Time-Differenced Carrier Phases From GNSS Buoys.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,62,12.
MLA	Yang, Lei,et al."Retrieval of Ocean Wave Characteristics via Single-Frequency Time-Differenced Carrier Phases From GNSS Buoys".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 62(2024):12.