Results 121 to 130 of about 1,485 (184)

Computing the Deflection of the Vertical for Improving Aerial Surveys: A Comparison between EGM2008 and ITALGEO05 Estimates. [PDF]

Sensors (Basel), 2016
Barzaghi R, Carrion D, Pepe M, Prezioso G.   +3 more
europepmc   +1 more source

Improvement of the Earth's gravity field from terrestrial and satellite data [PDF]

The terrestrial gravity data base was updated. Studies related to the Geopotential Research Mission (GRM) have primarily considered the local recovery of gravity anomalies on the surface of the Earth based on satellite to satellite tracking or ...

core   +1 more source

Comparative analysis of positioning accuracy of Samsung Galaxy smartphones in stationary measurements. [PDF]

PLoS One, 2019
Szot T, Specht C, Specht M, Dabrowski PS.   +3 more
europepmc   +1 more source

On accurate geoid modeling: derivation of dirichlet problems that govern geoidal undulations and geoid modeling by means of the finite difference method and a hybrid method

On accurate geoid modeling: derivation of dirichlet problems that govern geoidal undulations and geoid modeling by means of the finite difference method and a hybrid method
The geoid is the reference surface used to measure heights (orthometric). These are used to study any mass variability in the Earth system. As the Earth is represented by an oblate spheroid (Ellipsoid), the geoid is determined by geoidal undulations (N) which are the separation between these surfaces.
openaire  

Towards the Crowdsourcing of Massive Smartphone Assisted-GPS Sensor Ground Observations for the Production of Digital Terrain Models. [PDF]

Sensors (Basel), 2018
Massad I, Dalyot S.
europepmc   +1 more source

VMF3/GPT3: refined discrete and empirical troposphere mapping functions. [PDF]

J Geod, 2018
Landskron D, Böhm J.
europepmc   +1 more source

The first absolute gravity and height reference network in Sicily. [PDF]

Sci Data
Greco F, Berrino G, Riguzzi F, Mazzoni A, Amendola M, Carbone D, Contrafatto D, Dardanelli G, Brutto ML, Maltese A, Messina A, Mirabella L, Ricciardi G, Samperi L.   +13 more
europepmc   +1 more source

Ancient Maya wetland fields revealed under tropical forest canopy from laser scanning and multiproxy evidence. [PDF]

Proc Natl Acad Sci U S A, 2019
Beach T, Luzzadder-Beach S, Krause S, Guderjan T, Valdez F, Fernandez-Diaz JC, Eshleman S, Doyle C.   +7 more
europepmc   +1 more source

A Methodology to Validate the InSAR Derived Displacement Field of the September 7^th, 1999 Athens Earthquake Using Terrestrial Surveying. Improvement of the Assessed Deformation Field by Interferometric Stacking. [PDF]

Sensors (Basel), 2008
Kotsis I, Kontoes C, Paradissis D, Karamitsos S, Elias P, Papoutsis I.   +5 more
europepmc   +1 more source

Anomalous compressibility of ferropericlase throughout the iron spin cross-over. [PDF]

Proc Natl Acad Sci U S A, 2009
Wentzcovitch RM, Justo JF, Wu Z, da Silva CR, Yuen DA, Kohlstedt D.   +5 more
europepmc   +1 more source