Results 101 to 110 of about 2,142 (216)

A New Strategy for Improving Multi‐Frequency PPP‐RTK Ionospheric Correction Availability and User Performance in Low‐ and Middle‐Latitudes

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract High‐precision regional ionospheric correction products are essential for achieving accurate and fast‐convergence solutions in Precise Point Positioning Real‐Time Kinematic (PPP‐RTK). For users in low‐ and middle‐latitudes, PPP‐RTK server narrow‐lane (NL) ambiguity resolution (AR) typically requires more than 10 min, which largely affects the ...
Pan Li, Shitong Chen, Jiahuan Hu, Xin Xie, Jiadi Dai, Bao Shu, Guanwen Huang   +6 more
wiley   +1 more source

Mitigation of tropospheric delay induced errors in TS-InSAR ground deformation monitoring

International Journal of Digital Earth
Interferometric Synthetic Aperture Radar (InSAR) is capable of detecting crust deformation. However, the accuracy is limited by spatiotemporal changes in the lower troposphere.
Shipeng Guo, Xiaoqing Zuo, Wenhao Wu, Xu Yang, Jihong Zhang, Yongfa Li, Cheng Huang, Jingwei Bu, Shasha Zhu   +8 more
doaj   +1 more source

Estimating Carbon Pools in the European Shelf Sea Environment: Replacing Reanalysis by Model‐Informed Machine Learning?

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Shelf seas are important for the economy and the carbon cycle, but shelf sea observations for carbon pools are often sparse or highly uncertain. An alternative can be provided by carbon reanalyses (whether assimilating proxy variables, such as chlorophyll‐a $a$, or directly carbon), but these are often expensive to run.
Jozef Skákala
wiley   +1 more source

Assessment of the PPP-AR Strategy for ZTD and IWV in Africa: A One-Year GNSS Study

Atmosphere
With the increasing demand for near real-time atmospheric water vapor monitoring, this study evaluates the performance of the open-source PRIDE PPP-AR software (version 3.0.5) for retrieving Zenith Total Delay (ZTD) and Integrated Water Vapor (IWV) over ...
Moustapha Gning Tine, Pierre Bosser, Ngor Faye, Lila Jean-Louis, Mapathé Ndiaye   +4 more
doaj   +1 more source

A Unified Vector Electromagnetic Framework for Ionospheric Scintillation and Polarization Effects in GNSS

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The ionosphere imposes coupled amplitude, phase, and polarization distortions on trans‐ionospheric Global Navigation Satellite System (GNSS) signals, reflecting the structure and dynamics of electron‐density irregularities. Classical weak‐scatter theory provides a mature framework for interpreting amplitude and phase scintillation, but these ...
T. Durgonics, S. S. Beeck
wiley   +1 more source

Calibration and Fusion of GOLD‐Inferred TEC Data With Ground‐Based TEC

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Ground‐based Global Navigation Satellite System (GNSS) receivers provide primary total electron content (TEC) measurements used to monitor ionospheric variability, yet their sparse distribution over oceanic and equatorial regions limits global coverage and model accuracy.
Maria Smirnova, Shasha Zou, Grace Kwon, Hang Liu, Yang Chen   +4 more
wiley   +1 more source

Prevalence and Risk Indicators of Peri‐Implant Diseases in China: A Multicenter Cross‐Sectional Study

Clinical Oral Implants Research, Volume 37, Issue 6, Page 760-769, June 2026.
ABSTRACT Aim To evaluate the prevalence and risk indicators of peri‐implant diseases in a randomly selected Chinese population. Materials and Methods A total of 819 patients with 1412 implants from eight university hospital databases were clinically and radiographically evaluated along with medical records to assess the prevalence of peri‐implant ...
Xinbo Yu, Feng Wang, Dongning He, Jinming Wang, Runfa Wu, Dayong Zhang, Qin Fan, Haibin Xia, Zhe Qu, Yiqun Wu   +9 more
wiley   +1 more source

Satellite Remote Sensing of Alpine Vegetation Dynamics: Challenges and Perspectives

Global Change Biology, Volume 32, Issue 6, June 2026.
Satellite greening has become a key tool for monitoring alpine vegetation change, but a positive vegetation‐index trend is not an ecological observation in itself. This perspective shows that interpreting alpine greening requires addressing two sequential challenges: methodological complexity, which can bias trends during image processing, and ...
Arthur Bayle
wiley   +1 more source

Emergence Profile Angle Matters—Restoring Peri‐Implant Health by Adjusting Prosthetics—A Narrative Review

Journal of Esthetic and Restorative Dentistry, Volume 38, Issue 6, Page 1188-1196, June 2026.
ABSTRACT Objective To review the biological and clinical relevance of prosthetic design, specifically the emergence profile and restorative angle in influencing peri‐implant tissue health, and to illustrate how biologically driven prosthetic modifications can resolve inflammation and support peri‐implant stability.
Miha Pirc, Jonathan Esquivel, Andrea Patrizzi, Ronald E. Jung, Franz J. Strauss   +4 more
wiley   +1 more source

GAM-STTD: a spatiotemporal tropospheric delay correction model for time-series InSAR in complex mountainous regions

International Journal of Digital Earth
Tropospheric delay remains a critical error source in time-series interferometric synthetic aperture radar (TS-InSAR), particularly in mountainous and plateau regions where seasonal stratification and stochastic turbulence coexist.
Shipeng Guo, Xiaoqing Zuo, Jihong Zhang, Xu Yang   +3 more
doaj   +1 more source