Results 91 to 100 of about 574,019 (245)

Geographically-Informed Modeling and Analysis of Platform Attitude Jitter in GF-7 Sub-Meter Stereo Mapping Satellite

ISPRS International Journal of Geo-Information
The GF-7 satellite, China’s inaugural sub-meter-level stereoscopic mapping satellite, has been deployed for a wide range of applications, including natural resource investigation, environmental monitoring, fundamental surveying, and the development of ...
Haoran Xia, Xinming Tang, Fan Mo, Junfeng Xie, Xiang Li   +4 more
doaj   +1 more source

Topographic Effects in Geoid Determinations

Geosciences, 2018
Traditionally, geoid determination is applied by Stokes’ formula with gravity anomalies after removal of the attraction of the topography by a simple or refined Bouguer correction, and restoration of topography by the primary indirect topographic ...
Lars E. Sjöberg
doaj   +1 more source

Short‐Wavelength Seafloor Topography From SWOT Marine‐Gravity Products Using a Transformer U‐Net With Hybrid Loss

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Classical satellite altimetry has limited sensitivity to seafloor topography at wavelengths shorter than about 150 km, leaving short‐wavelength structure poorly constrained away from ship tracks. The Surface Water and Ocean Topography (SWOT) mission improves gravity recovery at these scales.
Ruichen Zhou, Peng Peng, Haoming Yan, Zizhan Zhang, Jiuke Wang, Binbin Liao, Jinyun Guo, Nico Sneeuw   +7 more
wiley   +1 more source

Application of GNSS Integrated Technology to Safety of Inland Water Navigation [PDF]

TransNav, 2007
In the paper the description of some applications of satellite integrated technology, elaborated in the Chair of Satellite Geodesy and Navigation of University of Warmia and Mazury in Olsztyn, to bathymetric survey of Great Masurian Lakes is given.
Dariusz Popielarczyk, Stanislaw Oszczak
doaj  

Gravimetric estimation of the Eötv¨ös matrix components

Contributions to Geophysics and Geodesy, 2017
The components of the Eötvös matrix are useful for various geodetic applications, such as interpolation of the elements of the deflection of the vertical, determination of gravity anomalies and determination of geoid heights. A torsion balance instrument
Gerassimos MANOUSSAKIS, Romylos KORAKITIS, Paraskevas MILAS   +2 more
doaj   +1 more source

A Random Forest–Based Global Gridded Model for Vertical Correction of Precipitable Water Vapor Accounting for Nonlinear Vertical Variation

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Vertical correction of precipitable water vapor (PWV) is a critical step in PWV fusion and atmospheric research. To address the limited accuracy of traditional global‐scale PWV vertical correction models that do not explicitly account for nonlinear vertical variations, we developed RF‐PWV, a global 1° × 1° PWV vertical correction model based ...
Junyu Li, Mingxun Zhang, Liying Cao, Lilong Liu, Bao Zhang, Yibin Yao, Liangke Huang   +6 more
wiley   +1 more source

Automating Archaeological Discovery: Assessing Geospatial Artificial Intelligence (GeoAI) Tools for Stone Wall Identification in Kweneng, South Africa

Archaeometry, Volume 68, Issue 5, Page 1152-1164, October 2026.
ABSTRACT The discovery of archaeological sites traditionally entails the utilisation of physically demanding exploration methodologies, including terrain surveying and the analysis of historical records. Recent technological developments have led to an increased use of non‐invasive remote sensing techniques, including Google Earth, LiDAR and aerial ...
Mncedisi J. Siteleki
wiley   +1 more source

Neural Spatiotemporal Interpolation for Gap Filling of GNSS-R Soil Moisture Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne Global Navigation Satellite System Reflectometry (GNSS-R) provides L-band observations suitable for soil moisture retrieval and monitoring, but the resulting datasets are inherently sparse in space and time. Many applications, however, benefit
Oto Alves, Wolfgang Wagner, Emanuele Santi, Martin Unwin, Gabrielle Marigold   +4 more
doaj   +1 more source

Using the geodetic and hydroacoustic measurements toinvestigate the bathymetric and morphometric parameters ofLake Hancza (Poland)

Open Geosciences, 2015
Most of the inland lakes do not have up-to-datebathymetry. However, a significant progress in surveyingtechnologies creates a possibility to quickly and accuratelydescribe the underwater environment.
Popielarczyk Dariusz, Templin Tomasz, Łopata Michał   +2 more
doaj   +1 more source

A Self‐Supervised Framework for Space Object Behaviour Characterisation

Expert Systems, Volume 43, Issue 10, October 2026.
ABSTRACT Foundation Models, which leverage large neural networks pre‐trained on unlabelled data before fine‐tuning for specific tasks, are increasingly being applied to specialised domains. Recent examples include ClimaX for climate and Clay for satellite Earth observation, but a Foundation Model for Space Object Behavioural Analysis (SOBA) has not yet
Ian Groves, Andrew Campbell, James Fernandes, Diego Ramírez Rodríguez, Paul Murray, Massimiliano Vasile, Victoria Nockles   +6 more
wiley   +1 more source