Enhanced BDS four-frequency cycle slip detection and repair using fuzzy clustering analysis
Available online 21 February 2025
Cycle slip detection and repair is one of the key technologies for GNSS high-precision positioning. We introduce an enhanced methodology for detecting and repairing BDS four-frequency cycle slips, utilizing...
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Research on the refinement algorithm of surface loading deformation based on Green’s function
Available online 21 February 2025
Surface deformation calculations due to environmental loading typically rely on the Preliminary Reference Earth Model (PREM), which assumes a homogeneous and isotropic Earth structure, leading to noticeable...
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Modeling and forecasting of TEC using subspace-based SSA-LRF-ANN model
Available online 19 February 2025
Subspace-based signal processing methods are fundamentally pre-trained Artificial Neural Networks (ANN) that provide the basic structure for numerous computer vision applications and explore the most...
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Gap-filling products for three GRACE/GRACE-FO mascon solutions
Available online 18 February 2025
The primary mission of the Gravity Recovery and Climate Experiment (GRACE) satellite and its successor, GRACE Follow-On (GRACE-FO), is to provide time-variable gravity fields, and its observations have...
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GNSS time series analysis of the crustal movement network of China: Detecting the optimal order of the polynomial term and its effect on the deterministic model
Available online 5 February 2025
GNSS time series analysis provides an effective method for research of the earth's surface deformation, and it can be divided into two parts, deterministic models and stochastic models. The former part...
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Spatiotemporal evolution of long-term slow slip events at the Hikurangi subduction zone, New Zealand (2021–2023): Implications for seismic activity
Available online 1 February 2025
Various slow slip events (SSEs) with distinct characteristics have been detected globally, particularly in regions with dense Global Navigation Satellite Systems (GNSS) networks. In the Hikurangi subduction...
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Numerical simulation for large baseline interferometric imaging altimeter
January 2025
Sea topography information holds significant importance in oceanic research and the climate change detection. Radar imaging altimetry has emerged as the leading approach for global ocean observation,...
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Galileo multi-day precise orbit determination using L-band and SLR data
January 2025
The continuously available satellites of European Galileo currently reach more than 25. To explore the rationality and reliability of the L-band and satellite laser ranging (SLR) data processing strategies,...
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Improving atmospheric pressure vertical correction model using Gaussian function
January 2025
The Zenith Hydrostatic Delay (ZHD) is essential for high-precision Global Navigation Satellite System (GNSS) and Very Long Baseline Interferometry (VLBI) data processing. Accurate estimation of ZHD...
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Detection and interpretation of the time-varying seasonal signals in China with multi-geodetic measurements
January 2025
The time-varying periodic variations in Global Navigation Satellite System (GNSS) stations affect the reliable time series analysis and appropriate geophysical interpretation. In this study, we apply...
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The dynamic effects of solar eclipses of October 25, 2022, and October 14, 2023, on GPS-derived total electron content
January 2025
This study analyzes total electron content (TEC) variations during two solar eclipse events that occurred on October 25, 2022, and October 14, 2023. The solar eclipse of October 25, 2022, was a partial...
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Evaluating the accuracy of earth rotation parameters based on the BDS observations
January 2025
The BeiDou satellite system (BDS) has progressed with the full operationalization of the second-generation regional system (BDS-2) and the third-generation global system (BDS-3). This technology plays...
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Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate
January 2025
The Mentawai Forearc Sliver (MFS) is characterized by oblique deformation formed as slip partitioned between normal and parallel trench plate convergence. The surge of great earthquakes from 2004 to...
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Factors influencing the effectiveness of SM-VCE method in solving 3D surface deformation
January 2025
The recovery of coseismic 3-dimensional (3D) surface deformation field plays a crucial role in studying seismic source characteristics and earthquake hazards. As of now, there are two main types of...
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Statistical analysis of regional STEC gradient trends for midlatitude ionosphere
January 2025
In this study, the gradients of Total Electron Content (TEC) for a midlatitude region are estimated and grouped with respect to the distance between neighboring stations, time periods within a day,...
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On the ionospheric response in the Taiwan region to Typhoon Meranti in September 2016
January 2025
Previous studies have revealed that typhoons can affect the ionosphere. This paper uses GNSS observations provided by GNSS tracking stations of Taiwan region, ERA5 gravity wave dissipation products,...
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Real-time earthquake magnitude prediction using designed machine learning ensemble trained on real and CTGAN generated synthetic data
Available online 30 January 2025
The earthquake early warning (EEW) system provides advance notice of potentially damaging ground shaking. In EEW, early estimation of magnitude is crucial for timely rescue operations. A set of thirty-four...
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Assessing CryoSat-2 Satellite's seasonal accuracy in lake water level monitoring
Available online 23 January 2025
Changes in lake levels, as an indicator of climate change, are crucial for understanding water resources. Satellite altimetry has proven to be an effective technique for monitoring water level changes...
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Constructing seasonal records of Ross Ice Shelf elevation changes using ICESat altimetry data
Available online 11 January 2025
Ice shelves are important passageways for ice sheets flowing into the ocean. Through iceberg calving and basal melting, ice shelves exert considerable influence on the mass balance of the Antarctic...
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Performance of invariants of gravity gradient tensor in matching navigation: A case study in South China Sea
Available online 13 December 2024
Choosing appropriate background field data is crucial for gravity field matching navigation. Current research mainly uses gravity anomaly data or gravity gradient data as background fields. However,...
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Performance of GNSS positioning in PPP mode using MADOCA precise products
November 2024
The Global Navigation Satellite System (GNSS) is widely utilized for accurate positioning. One commonly applied method to obtain precise coordinate estimates is by implementing the relative positioning...
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Improved artificial bee colony algorithm for pressure source parameter inversion of Sakurajima volcano from InSAR data
November 2024
A novel artificial bee colony algorithm was introduced for the eruption event of the Sakurajima volcano on August 9, 2020, to invert the magma source characteristics below the volcano based on the point...
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Exploring the topographical pattern beneath the water surface: Global bathymetric volume-area-height curves (BVAH) of inland surface water bodies
November 2024
Global inland surface water bodies such as lakes and reservoirs, important components of the hydrosphere and ecosphere, are increasingly affected by climate change. Generating bathymetric volume-area-height...
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Singular spectrum analysis for the time-variable seasonal signals from GPS in Yunnan Province
November 2024
Studying the seasonal deformation in GPS time series is important to interpreting geophysical contributors and identifying unmodeled and mismodeled seasonal signals. Traditional seasonal signal extraction...
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The earth's rotation-dominated seismicity preceding the 2023 MW7.8 Gaziantep, Türkiye, earthquake
November 2024
For earthquakes (M ≥ 4.0) occurring along and around the East Anatolian fault zone and the Dead Sea fault zone within ten years immediately before the MW7.8 Gaziantep earthquake, Türkiye, of February...
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