Results 91 to 100 of about 409 (165)

Zenith wet delay retrieval using two different techniques for the South American region and their comparison [PDF]

, 2021
Retrieving atmospheric water vapor content using GNSS claimed the attention of the geodetic community ever since the beginning of the GPS deployment. The main purpose of the present work is to propose a comparison of the Zenith Wet Delay (ZWD) retrieved ...
Crespi, Mattia, Brunini, Claudio Antonio, Azpilicueta, Francisco Javier, Calori, A., Colosimo, G., Mackern, M. V., Gende, Mauricio Alfredo, Rizos, Chris, Willis, Pascal   +8 more
core  

The ztd estimated values from three models named Site-wise, Grid-wise, and GPT3 and the ztd reference values provided by IGS between 2016 and 2020.

<p>The data includes the zenith total delay (ztd) values computed by three models provided by the VMF data server, namely <strong>Site-wise, Grid-wise, and GPT3</strong>, for target stations during the period from 2016 to 2020, along ...
Yao
core   +1 more source

GPS measurements of ocean loading and its impact on zenith tropospheric delay estimates: a case study in Brittany, France.

, 2002
International audienceThe results from a global positioning system (GPS) experiment carried out in Brittany, France, in October 1999, aimed at measuring crustal displacements caused by ocean loading and quantifying their effects on GPS-derived ...
Vey, S., Calais, E.
core   +1 more source

Atmospheric water vapor maps generations from stochastic interpolation of GNSS Zenith Tropospheric Delays [PDF]

, 2023
LAUREA MAGISTRALEIl monitoraggio degli eventi meteorologici nella moderna meteorologia richiede l'uso di tecniche avanzate, con I sistemi globali di navigazione satellitare (GNSS) che stanno emergendo come una soluzione importante.
ABDELGAFAR, OMAR SAYED MOSTAFA
core  

Tropospheric Correction for InSAR Using Interpolated ECMWF Data and GPS Zenith Total Delay From the Southern California Integrated GPS Network

, 2010
A tropospheric correction method for Interferometric Synthetic Aperture Radar (InSAR) was developed using profiles from the European Centre for Medium-Range Weather Forecasts (ECMWF) and Zenith Total Delay (ZTD) from the Global Positioning System (GPS ...
Webb, Frank, Fishbein, Evan, Moore, Angelyn, Björndahl, Fredrik, L\uf6fgren, Johan, Webb, Frank,, Fielding, Eric, Moore, Angelyn,, Bj\uf6rndahl, Fredrik, Björndahl, Fredrik,, Fielding, Eric,, Löfgren, Johan, Löfgren, Johan,, Fishbein, Evan,   +13 more
core   +1 more source

Effects of physical correlations on long-distance GPS positioning and zenith tropospheric delay estimates

, 2010
The global positioning system (GPS) has become an essential tool for the high precision navigation and positioning. The quality of GPS positioning results mainly depends on the model's formulations regarding GPS observations, including both a ...
Ren, C., Jin, S. G., Luo, O.
core   +1 more source

An Evaluation of the Accuracy of Real-Time Zenith Total Delay Estimates [PDF]

, 2013
The continuous evolution of Global Navigation Satellite Systems (GNSS) meteorology has lead to an increased use of associated observations for operational meteorology worldwide. In order to enhance short-term weather forecasts meteorological institutions
TEFERLE, Felix Norman, Laurichesse, Denis, AHMED, Furqan, Bingley, Richard   +3 more
core  

Comparison of Tropospheric Horizontal Gradients Modeling Methods in LEO Constellation Augmented GNSS Precise Point Positioning

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
With the improvement in GNSS data processing accuracies, the selection of optimal asymmetric troposphere delay modeling method becomes essential, especially during the period of severe weather events and with the development of low Earth orbit (LEO ...
Xinyu Zhang, Wenwu Ding, Xiaochuan Qu, Hongjin Xu, Xuanzhao Tan, Yunbin Yuan   +5 more
doaj   +1 more source

GPS zenith delay sensitivity evaluated from high-resolution numerical weather prediction simulations of the 8–9 September 2002 flash flood over southeastern France

, 2006
International audienceEstimations of zenith total delays (ZTD) were obtained during postprocessing of a high-resolution (2.4 km) nonhydrostatic atmospheric model (Méso-NH).
Caumont, Olivier, Walpersdorf, Andrea, Champollion, Cedric, Ducrocq, Véronique, Brenot, Hugues   +4 more
core   +1 more source

Multi-GNSS-Weighted Interpolated Tropospheric Delay to Improve Long-Baseline RTK Positioning. [PDF]

Sensors (Basel), 2022
Mirmohammadian F, Asgari J, Verhagen S, Amiri-Simkooei A.   +3 more
europepmc   +1 more source