Performance Evaluation of the Absolute Quantum Gravimeter AQG-B09 Observations for Post-Relocation Calibration of the Superconducting Gravimeter iGrav043
Available online 13 October 2026
This paper evaluates the performance of the Absolute Quantum Gravimeter AQG-B09 during a four-month co-location (4 Dec. 2024 to 8 Apr. 2025) with the superconducting gravimeter iGrav043 at Todenfeld...
Transformation grids for SIRGAS realization interoperability: An NTv2-based approach for frame and epoch unification across tectonically active Americas
Available online 13 October 2026
Geodetic Reference System for the Americas (Sistema de Referencia Geodésico para las Américas, SIRGAS) comprises three geodetic realizations, SIRGAS95, SIRGAS2000, and SIRGAS-CON (multi-year solutions...
Deep-GRASP: deep generative downscaling-assimilation-prediction for GRACE/GRACE-FO terrestrial water storage anomalies
Available online 13 October 2026
The Gravity Recovery and Climate Experiment (GRACE) satellite mission and its successor, GRACE Follow-On (GRACE-FO), have revolutionized our understanding of global land hydrodynamics and terrestrial...
Short-term prediction of polar motion using an LS-BiLSTM-Attention Model integrated with angular momentum and Kriging interpolation
Available online 13 October 2026
With the rapid development of space geodesy technology and the aerospace industry, cutting-edge fields such as satellite precise orbit determination, deep space exploration, and autonomous navigation...
Missing value imputation of long-term GNSS monitoring time series using a graph-conditioned diffusion model
Available online 13 October 2026
GNSS monitoring time series often suffer from missing values caused by receiver failures, equipment maintenance, power outages, and other uncontrollable factors, which degrade data quality and affect...
A 3D seismotectonic model constrained by a deep learning-based earthquake catalog: Implications for fault activity and buried structure detection in the northern section of Xiannvshan Fault Zone
Available online 13 October 2026
This study integrates two-phase dense array observations and the LOC-FLOW machine-learning-based workflow to construct a high-precision microseismic catalogue for the northern section of the Xiannvshan...
Geopotential and Vertical Displacement Effects of Time-Variable Geophysical Processes on Chronometric Leveling
Available online 13 October 2026
High-precision optical clock comparisons use gravitational redshift to determine geopotential differences and equivalent normal-height differences between stations, offering a new approach to height...
Analysis of the impact of large ring laser gyroscope (RLG) stationary noise on universal time (UT1) resolution
Available online 13 October 2026
Universal Time (UT1) is a critical conversion parameter between the terrestrial and celestial reference systems, with important applications in satellite navigation, deep-space exploration, and related...
Real-time atmospheric refraction coefficient determination using ERA5 reanalysis data for line-of-sight visibility and geodetic applications
Available online 10 October 2026
Atmospheric refraction is a fundamental source of systematic error in geodetic surveying, EDM, and line-of-sight visibility analysis. Practitioners assume κ = 0.13, a mid-twentieth-century average inappropriate...
Exploiting Melbourne-Wübbena-derived wide-lane priors for BDS-2/BDS-3 multi-frequency single-epoch positioning
Available online 10 October 2026
Reliable ambiguity resolution is critical for rapid BDS short baseline positioning and deformation monitoring. This study proposes a BDS-2/BDS-3 multi-frequency single-epoch ambiguity resolution method...
Centimeter-level land-sea geoid for Wanshan Radar Altimeter Calibration Site: Modeling and validation
September 2026
High-precision geoid modeling for the Wanshan Radar Altimeter Calibration Site (the world’s fifth operational base and China’s first) is fundamental to satellite calibration and ocean dynamic research....
Antenna environment effects on linear combination phase residuals: Pattern types and a novel metric
September 2026
This study investigates the relationship between elevation angle-dependent mean (elmean) ionosphere-free phase residuals and the antenna environment in permanent GNSS stations, as well as the noise...
ZTD model construction and its performance for large height difference Xizang by fusing ground-based GNSS and ERA5
September 2026
To address the limited performance of global zenith tropospheric delay (ZTD) models in representing strong elevation effects and local climatic variability over complex terrain in Xizang, a 0.25° ×...
Evaluation of the impact of the biomass on GRACE-borne total water storage estimates in the Amazon Basin
September 2026
The Amazon Basin plays a central role in regulating global carbon and water cycles, yet the interaction between forest biomass changes and terrestrial water storage (TWS) remains insufficiently constrained....
An interpretable KAN approach for triple-frequency BDS cycle-slip detection and repair
September 2026
We propose a triple-frequency Beidou navigation satellite system (BDS) cycle-slip detection and repair method that balances accuracy and interpretability. It addresses the limited sensitivity of traditional...
Global morphology and dynamic characteristics of ionospheric sporadic E layers based on COSMIC-2 observations
September 2026
Sporadic E (Es) layers, transient thin structures (90–130 km) with enhanced electron density in the ionosphere, exert significant impacts on radio wave propagation. This study systematically unveils...
Analysis of current crustal movement and strain characteristics of Guangxi ε-type tectonic system based on GNSS observations
September 2026
The current crustal movement patterns and dynamic mechanisms of the Guangxi ε-type tectonic system remain unclear. Based on data from 128 GNSS observation stations in Guangxi and neighboring areas from...
Numerical calculation and accuracy analysis of the highly oscillatory integral in the complete geodetic excitation solution of Earth's polar motion equation
September 2026
Variations in polar motion (PM) observed through space geodetic techniques imply comprehensive information on geophysical excitation. Traditional geodetic excitation series derived from PM observations...
Coseismic deformation and slip distribution of the 2025 MW7.1 Dingri earthquake constrained by GNSS and InSAR observations
September 2026
On January 7, 2025, an MW7.1 earthquake struck Dingri County, Xigaze City, southern Xizang. The epicenter was located on the western side of the Dengme Co Fault (DMCF) in the southern segment of the...
Factors controlling induced earthquakes in Oklahoma
September 2026
Injection-induced earthquake (IIE) caused by human activities has become a global problem due to the increased magnitude and frequency in recent decades. However, not all injections can induce earthquakes,...
A regularization algorithm for improving the reliability of TRF datum parameters
September 2026
The parameter estimation of the adjustment model of the Terrestrial Reference Frame (TRF) can be regarded as a rank-deficient problem. However, traditional internal constraints potentially treat the...
Estimating the velocities of space-geodetic stations: the case of DORIS
September 2026
Velocity estimates derived from time series of space geodetic station positions are influenced by seasonal signals and noise present in these time series. Therefore, the insufficiently modeled trend...
Changes in permafrost distribution and geo-hazard susceptibility in the central Himalayas: Insights from machine learning and remote sensing techniques
Available online 25 September 2026
High-altitude Himalayan permafrost is rapidly degrading under sustained climate warming. This degradation generates increasing environmental and infrastructure hazards that require urgent, evidence-based...
Mechanism-dependent scaling of GNSS peak ground displacement for rapid earthquake magnitude estimation
Available online 10 September 2026
Peak ground displacement (PGD) derived from high-rate Global Navigation Satellite System (GNSS) observations has become a key metric for rapid moment magnitude estimation in earthquake early warning...
Post-seismic deformation associated with the 2020 MW7.0 Samos (Aegean Sea) earthquake constrained by InSAR and GNSS observations
Available online 8 September 2026
This study investigates the post-seismic deformation following the October 30, 2020 MW7.0 Samos earthquake using Copernicus Sentinel-1 Interferometric Synthetic Aperture Radar (InSAR) time series and...