Regional Gravity Field Model of Egypt Based on Satellite and Terrestrial Data
Sign Up to like & getrecommendations! Published in 2018 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-018-1982-y
Abstract: This study presents a recent combined regional gravity field model over Egypt, developed by integrating satellite and terrestrial data via applying the remove-compute-restore (RCR) principle and the least-squares collocation (LSC) procedure. A high-resolution digital terrain… read more here.
Keywords: combined regional; model; regional gravity; terrestrial data ... See more keywords
Earth’s gravity field modelling based on satellite accelerations derived from onboard GPS phase measurements
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geodesy"
DOI: 10.1007/s00190-017-1009-y
Abstract: GPS data collected by satellite gravity missions can be used for extracting the long-wavelength part of the Earth’s gravity field. We propose a new data processing method which makes use of the ‘average acceleration’ approach… read more here.
Keywords: field modelling; earth gravity; field; satellite accelerations ... See more keywords
Divergence-free spherical harmonic gravity field modelling based on the Runge–Krarup theorem: a case study for the Moon
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Geodesy"
DOI: 10.1007/s00190-018-1177-4
Abstract: Recent numerical studies on external gravity field modelling show that external spherical harmonic series may diverge near or on planetary surfaces. This paper investigates an alternative solution that is still based on external spherical harmonic… read more here.
Keywords: field modelling; spherical harmonic; runge krarup; gravity ... See more keywords
Potential of cold-atom airborne gravimetry to improve coastal gravity field and quasigeoid modelling
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Geodesy"
DOI: 10.1007/s00190-024-01839-0
Abstract: We investigate using the GIRAFE cold-atom gravimeter during an airborne gravity survey for improving gravity field and quasigeoid modelling. The study is conducted over the Bay of Biscay, France. Geoid/quasigeoid determination is usually a major… read more here.
Keywords: cold atom; quasigeoid; gravity; field quasigeoid ... See more keywords
Orbit design for a future geodetic satellite and gravity field recovery
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Geodesy"
DOI: 10.1007/s00190-024-01884-9
Abstract: Spherical geodetic satellites tracked by satellite laser ranging (SLR) stations provide indispensable scientific products that cannot be replaced by other sources. For studying the time-variable gravity field, two low-degree coefficients C20 and C30 derived from… read more here.
Keywords: satellite; future geodetic; gravity field; geodetic satellite ... See more keywords
Gap filling between GRACE and GRACE-FO missions: assessment of interpolation techniques
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Geodesy"
DOI: 10.1007/s00190-024-01917-3
Abstract: We propose a benchmark for comparing gap-filling techniques used on global time-variable gravity field time-series. The Gravity Recovery and Climate Experiment (GRACE) and the GRACE Follow-On missions provide products to study the Earth’s time-variable gravity… read more here.
Keywords: grace; interpolation techniques; grace grace; gravity field ... See more keywords
Uncertainty propagation through integral inversion of satellite gradient data in regional gravity field recovery
Sign Up to like & getrecommendations! Published in 2025 at "Journal of Geodesy"
DOI: 10.1007/s00190-024-01929-z
Abstract: The Gravity field and steady-state Ocean Circulation Explorer (GOCE) mission, launched by the European Space Agency, provided high-quality gravitational gradient data with near-global coverage, excluding polar regions. These data have been instrumental in regional gravity… read more here.
Keywords: gravity anomalies; gravity; satellite gradient; gravity field ... See more keywords
Low-degree gravity field coefficients based on inverse GNSS method: insights into hydrological and ice mass change studies
Sign Up to like & getrecommendations! Published in 2024 at "GPS Solutions"
DOI: 10.1007/s10291-024-01760-1
Abstract: The relative displacements of stations from a global network of Global Navigation Satellite System (GNSS) sites provide information on global mass transport. In this study, we use 19 years of global GNSS station displacements from… read more here.
Keywords: grace; gnss; mass; inverse gnss ... See more keywords
High Performance Clocks and Gravity Field Determination
Sign Up to like & getrecommendations! Published in 2017 at "Space Science Reviews"
DOI: 10.1007/s11214-017-0431-z
Abstract: Time measured by an ideal clock crucially depends on the gravitational potential and velocity of the clock according to general relativity. Technological advances in manufacturing high-precision atomic clocks have rapidly improved their accuracy and stability… read more here.
Keywords: height systems; field; clock; high performance ... See more keywords
HUST-Grace2016s: A new GRACE static gravity field model derived from a modified dynamic approach over a 13-year observation period
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Space Research"
DOI: 10.1016/j.asr.2017.04.026
Abstract: Abstract The modified dynamic approach, where the observation vector and design matrix of observation equation are simultaneously filtered by empirical parameters, is implemented in this study. Using approximately 13 years (spanning from January 2003 to April… read more here.
Keywords: observation; hust grace2016s; grace; model ... See more keywords
Simulation-based evaluation of a cold atom interferometry gradiometer concept for gravity field recovery
Sign Up to like & getrecommendations! Published in 2017 at "Advances in Space Research"
DOI: 10.1016/j.asr.2017.12.005
Abstract: Abstract The prospects of future satellite gravimetry missions to sustain a continuous and improved observation of the gravitational field have stimulated studies of new concepts of space inertial sensors with potentially improved precision and stability.… read more here.
Keywords: cold atom; atom interferometry; field; gradiometer ... See more keywords