Results 71 to 80 of about 914 (138)

Evaluation of the first GOCE static gravity field models using terrestrial gravity, vertical deflections and EGM2008 quasigeoid heights [PDF]

open access: yes, 2011
Recently, four global geopotential models (GGMs) were computed and released based on the first two months of data collected by the GOCE (Gravity field and steady-state Ocean Circulation Explorer) dedicated satellite gravity field mission. Given that GOCE
Featherstone, Will   +2 more
core   +1 more source

GNSS-based heighting in Australia: current, emerging and future issues [PDF]

open access: yes, 2008
Ellipsoidal heights, i.e., w.r.t. a geometrical Earth figure, determined from Global Navigation Satellite Systems (GNSS) are inherently their least accurate coordinate, due mainly to satellite geometry and atmospheric refraction.
Featherstone, Will
core   +1 more source

Is Australian data really validating EGM2008, or is EGM2008 just in/validating Australia data? [PDF]

open access: yes, 2009
The tide-free release of the EGM2008 combined global geopotential model and its tide-free pre-release PGM2007A are compared with Australian land, marine and airborne gravity observations, co-located GPS-levelling on the [admittedly problematic ...
Anjasmara, Ira   +3 more
core  

A re-evaluation of the offset in the Australian Height Datum between mainland Australia and Tasmania [PDF]

open access: yes, 2012
The adoption of local mean sea level (MSL) at multiple tide-gauges as a zero reference level for the Australian Height Datum (AHD) has resulted in a spatially variable offset between the geoid and the AHD.
Featherstone, Will, Filmer, Michael
core   +1 more source

Vzpostavitev ESRS v Sloveniji : Realization of ESRS in Slovenia [PDF]

open access: yesGeodetski Vestnik, 2007
The purpose of the paper is to present the introduction and implementation of the new state reference system in Slovenia. The new system will be a realization of the European reference system ESRS (European Spatial Reference System) in our territory ...
Bojan Stopar
doaj  

Geoid-to-Quasigeoid Separation Computed Using the GRACE/GOCE Global Geopotential Model GOCO02S - A Case Study of Himalayas and Tibet

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2013
The geoid-to-quasigeoid correction has been traditionally computed approximately as a function of the planar Bouguer gravity anomaly and the topographic height.
Mohammad Bagherbandi Robert Tenzer
doaj   +1 more source

DFHRS-based computation of quasi-geoid of Latvia

open access: yesGeodesy and Cartography, 2013
In geodesy, civil engineering and related fields high accuracy coordinate determination is needed, for that reason GNSS technologies plays important role.
Inese Janpaule   +4 more
doaj   +1 more source

A new combined quasigeoid model in Tierra del Fuego [PDF]

open access: yes, 2019
This work focuses on the development of a combined quasigeoid model for Tierra del Fuego province. The Equivalent Source Technique (EST) is applied together with the remove-compute-restore technique in order to combine gravity and GPS/levelling ...
Del Cogliano, Daniel Héctor   +3 more
core  

Determination of a new gravimetric quasigeoid for Romania

open access: yes, 2022
The project of modeling a gravimetric quasigeoid for Romania is carried out in stages, based on the gravimetric measurements in the area of each county, in the gravimetric points of the 0, 1st and 2nd order gravimetric network, in the checkpoints with GNSS/levelling data and also in the new designed points.The remove-compute-restore technique was used ...
Spiroiu, I.   +4 more
openaire   +1 more source

Tracking Fluorescent Dye Dispersion from an Unmanned Aerial Vehicle. [PDF]

open access: yesSensors (Basel), 2021
Burdziakowski P   +3 more
europepmc   +1 more source

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