Results 31 to 40 of about 120,602 (222)

GNSS Meteorology and Tropospheric Paramteres Investigation

open access: yesGeodetski glasnik, 2015
Troposphere plays crucial role for geodetic comunity, which can primarly be seen in its influence on GNSS observations. At the same time, troposhpere is the place where almost all hidrometeorological phenomena that effect our everyday life occure. Scientists have found a way to use systematic influence that troposphere has on GNSS signal and turn it ...
Alma Tabaković   +2 more
openaire   +1 more source

An ERA5-Based Hourly Global Pressure and Temperature (HGPT) Model

open access: yesRemote Sensing, 2020
The Global Navigation Satellite System (GNSS) meteorology contribution to the comprehension of the Earth’s atmosphere’s global and regional variations is essential.
Pedro Mateus   +3 more
doaj   +1 more source

A novel quasi-open loop architecture for GNSS carrier recovery systems [PDF]

open access: yes, 2012
The problem of designing robust systems to track global navigation satellite system (GNSS) signals in harsh environments has gained high attention. The classical closed loop architectures, such as phase locked loops, have been used for many years for ...
Letizia Lo Presti   +5 more
core   +1 more source

Potential Impacts of Radio Occultation Data Assimilation on Forecast Skill of Tropical Cyclone Formation in the Western North Pacific

open access: yesGeophysical Research Letters, 2023
This study assesses the potential influence of global navigation satellite system (GNSS) radio occultation (RO) data assimilation on the forecast skill of tropical cyclone formation over the western North Pacific in September–October 2019 through a ...
Hsu‐Feng Teng   +2 more
doaj   +1 more source

Comprehensive Study on the Tropospheric Wet Delay and Horizontal Gradients during a Severe Weather Event

open access: yesRemote Sensing, 2022
GNSS meteorology is today one of the most growing technologies to monitor severe weather events. In this paper, we present the usage of 160 GPS reference stations over the period of 14 days to monitor and track Hurricane Harvey, which struck Texas in ...
Victoria Graffigna   +3 more
doaj   +1 more source

Cross-comparison of meteorological parameters and ZTD observations supplied by microwave radiometers, radiosondes, and GNSS services [PDF]

open access: yesGeodesy and Cartography, 2021
Water vapour radiometers (WVR) provide information about temperature and humidity in the troposphere, with high temporal resolution when compared to the radiosonde (RS) observations.
Estera Trzcina   +2 more
doaj   +1 more source

Retrieving Accurate Precipitable Water Vapor Based on GNSS Multi‐Antenna PPP With an Ocean‐Based Dynamic Experiment

open access: yesGeophysical Research Letters, 2023
As an attractive technique for measuring water vapor, the Global Navigation Satellite System (GNSS) faces additional challenges in dynamic applications such as in the open sea. We present a new method of retrieving precipitable water vapor (PWV) based on
Juan Wei   +7 more
doaj   +1 more source

Variation of Precipitable Water Vapor derived from GNSS CORS Observations in Thailand [PDF]

open access: yesE3S Web of Conferences, 2019
This research aims to study a distance variation of Precipitable Water Vapor (PWV) between CORS stations in Thailand using a Precise Point Positioning (PPP) technique.
Meunram Paramee, Satirapod Chalermchon
doaj   +1 more source

Implementation of a GNSS meteorological model to the estimation of the Haines Index [PDF]

open access: yesFire Ecology, 2019
The objective of this study was to look for a replacement to the radiosonde measurements that are necessary for the construction of an index of potential wildfire severity (i.e., Haines Index, HI) in areas of South America that have had few to no radiosonde launches.
Fernández, Laura Isabel   +3 more
openaire   +3 more sources

A Regional Zenith Tropospheric Delay (ZTD) Model Based on GPT3 and ANN

open access: yesRemote Sensing, 2021
The delays of radio signals transmitted by global navigation satellite system (GNSS) satellites and induced by neutral atmosphere, which are usually represented by zenith tropospheric delay (ZTD), are required as critical information both for GNSS ...
Fei Yang   +4 more
doaj   +1 more source

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