Results 111 to 120 of about 4,939 (225)
A new vertical reduction model for enhancing the interpolation accuracy of VMF1/VMF3 tropospheric delay products [PDF]
Geoscientific Model DevelopmentGrid-wise Vienna Mapping Functions 1 (VMF1) and Vienna Mapping Functions 3 (VMF3) tropospheric products are widely used to interpolate the a priori zenith hydrostatic delay (ZHD) and zenith wet delay (ZWD) over GNSS (Global Navigation Satellite Systems ...
P. Sun +8 more
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From pixel to mesh: accurate and straightforward 3D documentation of cultural heritage from the Cres/Lošinj archipelago [PDF]
, 2015 Most people like 3D visualizations. Whether it is in movies, holograms or games, 3D (literally) adds an extra dimension to conventional pictures. However, 3D data and their visualizations can also have scientic archaeological benets: they are crucial in ...
Doneus, Michael +3 more
core
A Method to Improve the Distribution of Observations in GNSS Water Vapor Tomography
Sensors, 2018 Water vapor is an important driving factor in the related weather processes in the troposphere, and its temporal-spatial distribution and change are crucial to the formation of cloud and rainfall.
Fei Yang +5 more
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Proceedings, 2019 A processing methodology with GNSS observations to obtain Zenith Tropospheric Delay using Bernese GNSS Software version 5.2 is revised in order to obtain Precipitable Water Vapor (PWV). The most traditional PWV observation method is the radiosonde and it
Raquel Perdiguer-López +2 more
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Soil moisture retrieval using GNSS-R [PDF]
, 2009 the UPC Passive Remote Sensing Lab (RSLab) has developed theoretical models exploiting this technique for soil moisture retrieval. These models are based on the interference pattern produced by interaction between the direct GPS signal and the reflected
Caleechurn, Dhrishti
core
St. Patrick’s Day 2015 geomagnetic storm analysis based on Real Time Ionosphere Monitoring [PDF]
, 2017 A detailed analysis is presented for the days in March, 2015 surrounding St. Patrick’s Day 2015 geomagnetic storm, based on the existing real-time and near real-time ionospheric models (global or regional) within the group, which are mainly based on ...
Agrotis, Loukis +27 more
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GNSS: geodesy, meteorology and climate
, 2012 Les systèmes de positionnement et de navigation par satellite (GNSS) ont connu un formidable essor au cours des deux dernières décennies au point d'être aujourd'hui un élément technologique universel. Le recours au positionnement précis par satellite est intégré à notre vie quotidienne: puces GPS intégrées dans les téléphones portables, systèmes de ...
openaire +1 more source
New applications and opportunities of GNSS meteorology
, 2020 Water vapor content of the atmospheric low layer, up to about 18 km, known as troposphere or neutral atmosphere, affects GNSS (Global Navigation Satellite System) signals by lowering their propagation velocities with respect to vacuum. A diminished speed results in a time delay in the signal propagation along the satellite-receiver path, that ...
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingZenith wet delay (ZWD) estimation is a key component for the global navigation satellite system (GNSS) meteorology. At present, the zenith hydrostatic delay can be computed with sufficient accuracy by means of empirical models, while the ZWD, which is ...
Rui Wang +3 more
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Journal of Space Weather and Space ClimateRadio occultation (RO) measurements performed by Global Navigation Satellite System (GNSS) receivers onboard low-earth orbit (LEO) satellites are commonly used for a variety of atmospheric applications, including ionospheric and space weather studies. We
Mohanty Shradha +2 more
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