Results 181 to 190 of about 4,939 (225)

Real-Time GNSS Meteorology in Europe - Hurricane Lorenzo Case Study

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
Near real-time estimation of zenith total delays (ZTD) of Global Navigation Satellite Systems (GNSS) signals is operationally performed in Europe. We demonstrate that high accuracy ZTD can be provided even in real-time. Using a state-of-the-art processing strategy we estimate ZTD and horizontal gradients for 162 permanent stations in Europe over 100 ...
Tomasz Hadas   +3 more
openaire   +1 more source

The Effects of Meteorological Parameters on GNSS Height Component

2023
In this study, when the height components of continuous GNSS stations were examined, it was seen that there were seasonal effects, and it was investigated whether the height components were related to meteorological parameters. Linear regression analysis was performed to obtain how dependent the height components of the continuous GNSS stations were on
Nihal Tekin Ünlütürk, Uğur Doğan
openaire   +2 more sources

Preliminary study of GNSS meteorology techniques in Algeria

International Journal of Remote Sensing, 2013
Algeria is still not covered by the global navigation satellite system GNSS permanent stations network, despite its advantages as a novel technology for environmental development and strategy. The work presented here aims to show a preliminary study of GNSS meteorology techniques in Algeria.
S. Boutiouta, A. Lahcene
openaire   +1 more source

New meteorological products based on Sentinel-1 and GNSS

2020
<p>Recently, the SAR Meteorology technique has demostrated the advantages of assimilating Sentinel-1 maps of Precipitable Water Vapor (PWV) in high resolution Numerical Weather Models (NWP) when forecasting extreme weather events [1].
Giovanni Nico   +5 more
openaire   +1 more source

An Evaluation of GNSS Radio Occultation Technology for Australian Meteorology

Journal of Global Positioning Systems, 2007
Earth atmospheric information has been primarily observed by a global network of radiosonde weather observation stations for global weather forecasting and climatologic studies for many years. However, the main disadvantage of this method is that it can not sufficiently capture the complex dynamics of the Earth’s atmosphere since its limited and ...
E. Fu   +7 more
openaire   +1 more source

Adaptive AOD Forecast Model Based on GNSS-Derived PWV and Meteorological Parameters

IEEE Transactions on Geoscience and Remote Sensing, 2022
Aerosol optical depth (AOD) is one of the basic parameters for determining the total aerosol content, and it exerts an important impact on regional environment pollution. To investigate the spatiotemporal variations of AOD, this study analyzes the relationship of AOD with precipitable water vapor (PWV) derived from a global navigation satellite system (
Qingzhi Zhao   +3 more
openaire   +1 more source

Spatiotemporal-varying tropospheric stochastic model for GNSS meteorology enhancement

Measurement Science and Technology
Abstract Accurately estimating the zenith wet delay (ZWD) is critical in Global Navigation Satellite System (GNSS) meteorology. ZWD is typically modeled as a random walk process with spatiotemporal-invariant process noise in the Kalman filter using precise point positioning.
Yingchao Xiao, Xingqun Zhan, Yawei Zhai
openaire   +1 more source

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