Results 51 to 60 of about 173 (112)

DFHRS-based computation of quasi-geoid of Latvia

Geodesy 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, Reiner Jäger Jäger, Ghadi Younis, Jānis Kaminskis, Ansis Zariņš   +4 more
doaj   +1 more source

Mathematical Modeling, Sensitivity Analysis, and Comparative Evaluation of Height Systems in Engineering, Geodetic, and Cartographic Applications: A Romania-Oriented Computational Study

Mathematics
Height systems form a mathematical interface between physical geodesy, engineering surveying, and digital cartography. Although satellite positioning efficiently provides ellipsoidal heights, practical infrastructure, mapping, hydrological, and ...
Gabriel Bădescu, Mihail Susinski, Cristian Vasile, Petre Săvescu, Emilia Constantinescu, Gabriel Tănasie, Nicolae Dima, Larisa-Ofelia Filip, Adrian Savu, Caius Didulescu   +9 more
doaj   +1 more source

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

Sensors (Basel), 2021
Burdziakowski P, Zima P, Wielgat P, Kalinowska D.   +3 more
europepmc   +1 more source

UAV Photogrammetry under Poor Lighting Conditions-Accuracy Considerations. [PDF]

Sensors (Basel), 2021
Burdziakowski P, Bobkowska K.
europepmc   +1 more source

On the computation of the geoid–quasigeoid separation [PDF]

Journal of Geodesy, 2011
Jakob Flury, Reiner Rummel
openaire   +1 more source

A conversion of the geoid to the quasigeoid at the Hong Kong territories

Applied Geomatics
AbstractA levelling network was readjusted and a new geoid model compiled within the framework of geodetic vertical datum modernization at the Hong Kong territories. To accomplish all project objectives, the quasigeoid model has to be determined too.
Ababio, AN, Foroughi, I, Tenzer, R, Bagherbandi, M   +3 more
openaire   +3 more sources

Analysis of the merged quasi-geoid of neighbouring areas

Geodesy and Geodynamics, 2018
Employing the merged quasi-geoid, we analyses the causes of systematic errors in modelling of quasi-geoid of neighbouring areas in the paper, and the efficient method is introduced to improve the accuracy of quasi-geoid.
Chunxi Guo, Jianliang Nie, Bin Wang, Jie Tian, Guangwei Jiang, Junying Chen, Shijuan Zhang   +6 more
doaj   +1 more source

Changing the national height system and GEOID model in Latvia

Geodesy and Cartography, 2016
According to the decision of IAG Reference Frame Sub-commission for Europe (EUREF) the EVRF2007 solution as the vertical reference has to be deployed in EU countries.The new height system LAS-2000,5 had been enacted as the European Vertical Reference ...
Janis Balodis, Katerina Morozova, Gunars Silabriedis, Maris Kalinka, Kriss Balodis, Ingus Mitrofanovs, Irina Baltmane, Izolde Jumare   +7 more
doaj   +1 more source

Investigation of the accuracy of constructing digital elevation models of technogenic massifs based on satellite coordinate determinations

Записки Горного института
At all stages of the life cycle of buildings and structures, geodetic support is provided by electronic measuring instruments – a laser scanning system, unmanned aerial vehicles, and satellite equipment.
Mikhail Ya. Bryn, Murat G. Mustafin, Dinara R. Bashirova, Bogdan Yu. Vasilev   +3 more
doaj  

GEOID-QUASIGEOID CORRECTION IN FORMULATION OF THE FUNDAMENTAL FORMULA OF PHYSICAL GEODESY [PDF]

Revista Brasileira de Cartografia, 2003
To formulate the fundamental formula of physical geodesy at the physical surface of the Earth, the gravity anomalies are used instead of the gravity disturbances, because the geodetic heights above the geocentric reference ellipsoid are not usually ...
Petr Vanícek, Robert Tenzer
doaj