Results 31 to 40 of about 409 (165)

Tropospheric refraction and its influence through Zenith Total Path Delay at different IGS stations [PDF]

, 2023
The propagation of the Global Navigation Satellite System (GNSS) signals through the atmosphere is affected by the electron content in the ionosphere and the air density in the electrically neutral troposphere, thus causing a signal delay and leading to ...
Vasilić, Violeta, Brajović, Ljiljana, Petković, Dušan, Blagojević, Dragan   +3 more
core  

Comparison of GPS tropospheric delays derived from two consecutive EPN reprocessing campaigns from the point of view of climate monitoring [PDF]

Atmospheric Measurement Techniques, 2016
The main purpose of this research was to acquire information about consistency of ZTD (zenith total delay) linear trends and seasonal components between two consecutive GPS reprocessing campaigns.
Z. Baldysz, G. Nykiel, A. Araszkiewicz, M. Figurski, K. Szafranek   +4 more
doaj   +1 more source

Preliminary Results on Tropospheric ZTD Estimation by Smartphone

Remote Sensing, 2021
The Global Navigation Satellite System (GNSS) receiver is one of the many sensors embedded in smartphones. The early versions of the Android operating system could only access limited information from the GNSS, allowing the related Application Program ...
Lorenzo Benvenuto, Paolo Dabove, Ilaria Ferrando, Domenico Sguerso   +3 more
doaj   +1 more source

Comparative Analysis of Real-Time Precise Point Positioning Zenith Total Delay Estimates [PDF]

, 2013
The use of observations from Global Navigation Satellite Systems (GNSS) in operational meteorology is increasing worldwide due to the continuous evolution of GNSS.
Teferle, F.N., Laurichesse, Denis, V�clavovic, P., AHMED, Furqan, Bingley, R.M., Laurichesse, D., Dousa, Jan, TEFERLE, Felix Norman, Ahmed, F., Douša, J., Václavovic, P., Dou�a, J., Vaclavovic, Pavel, Bingley, Richard   +13 more
core   +1 more source

Kinematic ZTD Estimation from Train-Borne Single-Frequency GNSS: Validation and Assimilation

Remote Sensing, 2021
Water vapour is one of the most important parameters utilized for the description of state and evolution of the Earth’s atmosphere. It is the most effective greenhouse gas and shows high variability, both in space and time.
Matthias Aichinger-Rosenberger, Robert Weber, Natalia Hanna   +2 more
doaj   +1 more source

Zenith total delay study of a mesoscale convective system : GPS observations and fine-scale modelling

, 2002
Zenith Total Delay (ZTD) observations and model calculations are used to analyze a mesoscale convective system which yielded a large amount of precipitation over a short period of time in the north-western Mediterranean. ZTD observations are derived from
Cucurull, I., Rius, A., Vilà-Guerau de Arellano, J.   +2 more
core   +1 more source

Impact of the variational assimilation of ground-based GNSS zenith total delay into AROME-Morocco model

Tellus: Series A, Dynamic Meteorology and Oceanography, 2020
The impact of assimilating zenith total delay (ZTD) observations from the Moroccan ground-based Global Navigation Satellite System (GNSS) network into the high-resolution operational model AROME-Morocco (2.5 km) is assessed over one month.
Fatima Zahra Hdidou, Soumia Mordane, Patrick Moll, Jean-François Mahfouf, Hassnae Erraji, Zaineb Dahmane   +5 more
doaj   +1 more source

Time series of atmospheric water vapour and troposphere zenith total delay, over Central and South America, from a homogeneous GNSS reprocessing (MAGGIA ZTD & IWV Solution 1)

, 2016
Atmospheric water vapour has been acknowledged as an essential climate variable. Weather prediction and hazard assessment systems benefit from real-time observations, whereas long-term records contribute to climate studies.
Natali, María Paula, Amalia Meza (8014352), Clara Bianchi (357035), Mendoza, Luciano Pedro Oscar, María Paula Natali (8014349), Juan Moirano (8014355), Meza, Amalia, Luciano Pedro Oscar Mendoza (8014346), Laura Fernández (817799), Bianchi, Clara, Moirano, Juan, Fernández, Laura   +11 more
core   +1 more source

Investigating the Inter-Relationships among Multiple Atmospheric Variables and Their Responses to Precipitation

Atmosphere, 2023
In this study, a comprehensive investigation into the inter-relationships among twelve atmospheric variables and their responses to precipitation was conducted. These variables include two Global Navigation Satellite Systems (GNSS) tropospheric products,
Haobo Li, Suelynn Choy, Safoora Zaminpardaz, Brett Carter, Chayn Sun, Smrati Purwar, Hong Liang, Linqi Li, Xiaoming Wang   +8 more
doaj   +1 more source

Point-scale IWV and zenith total delay (ZTD) derived for 66 stations of the global navigation satellite system (GNSS) Upper Rhine Graben network (GURN)

, 2021
The ground-based global navigation satellite system (GNSS) technic was employed to retrieve the integrated water vapor (IWV) at 66 stations of the GNSS Upper Rhine Graben network (GURN).
Kutterer, Hansjörg, Yuan, Peng
core   +1 more source