Results 111 to 120 of about 5,886 (223)
Experiments with assimilation of ZTD GPS data
, 2004 Ponencia presentada en: HIRLAM All-Staff Meeting 2004 celebrado en Madrid, del 1 al 3 de marzo de 2004, en el Instituto Nacional de ...
Sánchez Arriola, Jana +2 more
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Comparison of GPS slant wet delays acquired by different techniques [PDF]
, 2012 This paper discusses the quality of slant wet delays (SWD) computed from GPS measurements. The SWDs are generally used as input data for GPS tomography, which allows the three-dimensional reconstruction of water vapour distribution in the atmosphere ...
Douša, Jan +2 more
core
Assimilating UAV-based GNSS ZTDs for Numerical Weather Predictions
In recent decades, various studies have demonstrated that assimilating tropospheric parameters from ground-based GNSS receivers benefits numerical weather predictions (NWPs). However, the achieved performance is limited by the spatial resolution of GNSS, especially in the vertical direction.
Zhenyi Zhang +8 more
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Long-term ZTD and ZWD series and climate normals using NCEP1
, 2020 <p>The World Meteorological Organization (WMO) recommends the use of climate normals for dealing with the analysis of variations and trends of the meteorological parameters or be used as input to predictive climate models. The suggested period is 30 years, but shorter periods can also be employed.
Marcelo C. Santos +3 more
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AtmosphereTo accurately estimate Zenith Tropospheric Delay (ZTD) for high-precision positioning of the Global Navigation Satellite System (GNSS), this study proposes a modeling method of ZTD based on the UNB3m model and Kriging spatial interpolation, in which the ...
Huineng Yan +5 more
doaj +1 more source
Utilisation de processus légers pour l'exécution de programmes à parallélisme de données : étude expérimentale [PDF]
, 1996 Ce rapport présente une étude de quelques aspects importants des processus légers pour leur utilisation à l'exécution de programmes à parallélisme de données. La surcharge de l'environnement d'exécution, le coût des synchronisations globales, de création
Pérez, Christian
core +2 more sources
A Finite First-Order Presentation of Set Theory [PDF]
, 2001 We present a first-order formalization of set theory which has a finite number of axioms. Its syntax is similar to that often used in textbooks: it provides an encoding of the comprehension symbol.
Vaillant, Stéphane
core +1 more source
Do Central Banks have Precautionary Demands for Expansions and for Price Stability? [PDF]
This paper analyses the impact of asymmetric preferences with respect to inflation and output by policymakers on interest-rate reaction functions. A theoretical framework which makes it possible to identify the dominant type of asymmetry is developed and
Alex Cukierman, Anton Muscatelli
core
Do Central Banks have Precautionary Demands for Expansions and for Price Stability? - Theory and Evidence [PDF]
This paper analyses the impact of asymmetric preferences with respect to inflation and output by policymakers on interest-rate reaction functions and test for their existence.
Alex Cukierman, V. Anton Muscatelli
core
DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM
Scientific Journal of Silesian University of Technology. Series Transport, 2020 This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN +2 more
doaj +1 more source