Results 1 to 10 of about 556,505 (312)

An Automatic Coordinate Unification Method of Multitemporal Point Clouds Based on Virtual Reference Datum Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Deformation monitoring of structures is a common application and one of the major tasks in surveying engineering, but there is a great challenge for the coordinate datum unification of multitemporal point cloud data. To address this problem, an automatic
Wenxiao Sun, Jian Wang, Fengxiang Jin
doaj   +2 more sources

Estimation of Vertical Datum Parameters Using the GBVP Approach Based on the Combined Global Geopotential Models

open access: yesRemote Sensing, 2020
Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for a unified vertical datum system is to determine the vertical offset between the local vertical datum and the global ...
Panpan Zhang   +7 more
doaj   +2 more sources

Quantum harmonic oscillator with superoscillating initial datum [PDF]

open access: yes, 2014
In this paper, we study the evolution of superoscillating initial data for the quantum driven harmonic oscillator. Our main result shows that superoscillations are amplified by the harmonic potential and that the analytic solution develops a singularity ...
R. Buniy   +3 more
semanticscholar   +5 more sources

The review and development of a modern GNSS network and datum in Uzbekistan

open access: yesGeodesy and Geodynamics, 2017
This study is focused on the discussion of a modern GNSS network and datum in Uzbekistan. Considering the significance difference (up to 200 m) in positions of the local ellipsoidal datum and the global datum, the precise transformation parameters ...
Dilbarkhon Fazilova
doaj   +2 more sources

Transformaciones de Datum.

open access: yesUniciencia, 2004
Con el uso generalizado de las técnicas satelitales aplicadas en topografía y geodesia, se ha generado la necesidad de transformar entre marcos coordenados de referencia globales y locales.
Manuel Ramírez, Juan G. Serpas
doaj   +3 more sources

RESEARCH IMPLEMENTATION OF BEIDOU DATA FAST PROCESSING OF LARGE-SCALE GNSS REFERENCE STATION NETWORK [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
GNSS reference station network is the core infrastructure for the establishment ,maintenance, renewal and service of national geodetic reference framework. At present ,nearly 3000 reference stations have been constructed in the national resources system ,
Q. Zhang   +7 more
doaj   +1 more source

COORDINATE TRANSFORMATION FROM KARBALA 1979 AND WORLD GEODETIC SYSTEM 1984 TO IRAQI GEOSPATIAL REFERENCE SYSTEM [PDF]

open access: yesJournal of Engineering and Sustainable Development, 2022
Nowadays, the transformation between coordinate systems is the major interested problems especially in Iraq. There are many coordinate systems used to produce maps and documentations due to different datums and spheroids.
Ruba Y. Hussain
doaj   +1 more source

Need for pan-India compatibility of geospatial databases in terms of map projections and parameters

open access: yesGeocarto International, 2023
The present study is taken up to record variations in the extent of area of two polygons—(i) a ground measured area of a university campus, (ii) enclosing the Ganga basin—and to examine the changes in both shape and area of another (iii) polygon covering
Mallikarjun Mishra   +2 more
doaj   +1 more source

The height datum/geodetic datum problem [PDF]

open access: yesGeophysical Journal International, 2002
The height datum problem is present in the geodetic literature since the times of Pizzetti, when it was realized that as only differences of the gravity potential can be derived from measurements, there was still one global parameter to be settled in order to determine a global model.
F. Sansò, G. Venuti
openaire   +2 more sources

Age control of the first appearance datum for Javanese Homo erectus in the Sangiran area

open access: yesScience, 2020
Dating the arrival of the first hominins in Java The World Heritage archaeological site at Sangiran on the island of Java in Indonesia has major importance for the understanding of human arrival and evolution in Asia.
S. Matsu’ura   +13 more
semanticscholar   +1 more source

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