Results 81 to 90 of about 914 (138)
UAV Photogrammetry under Poor Lighting Conditions-Accuracy Considerations. [PDF]
Sensors (Basel), 2021 Burdziakowski P, Bobkowska K.
europepmc +1 more source
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 +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 +7 more
doaj +1 more source
Development of Latvian national 2nd order leveling network
Geodesy and Cartography, 2016 Latvian National First Order Levelling Network consist of 15 polygons and 51 lines and was reestablished in 2011. From 1st of December of year 2014 in Latvia Republic is new Latvian normal height system at epoch 2000,5.
Madara Znotina +2 more
doaj +1 more source
Problem of development high-precision local model of quasigeoid
Journal of Physics: Conference Series, 2017 The description and the topicality of the geodetic heights transformation to the quasigeoid reference surface were shown. The problem-solving techniques, the level of the topic scientific development and perspectives for further research of the local Height Reference Surface modeling are under consideration.
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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
Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models
, 2009 In the context of a GOCE regional validation and combination experiment in Germany, a work package within the framework of the GOCE-GRAND II project, gravity observations, vertical deflections and GPS/levelling data are collected as independent data sets.
Voigt, C., Denker, H., Hirt, C.
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Validation of the AUSGeoid98 model in Western Australia using historic astrogeodetically observed deviations of the vertical [PDF]
, 2007 AUSGeoid98 is the national standard quasigeoid model of Australia, which is accompanied by a grid of vertical deviations (angular differences between the Earth's gravity vector and the surface-normal to the reference ellipsoid).
Featherstone, Will, Morgan, L.
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Записки Горного институтаAt 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 +3 more
doaj
Progress Towards the New Australian Geoid-type Model as a Replacement for AUSGeoid98 [PDF]
, 2007 We are nearing the final stages of producing a new geoid-type model for Australia that will replace AUSGeoid98. The terminology geoid-type reflects that the gravimetric quasigeoid model will be fitted to Australia-wide GPS-levelling data, probably using
Awange, Joseph +6 more
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