Results 91 to 100 of about 910 (213)

Ionospheric data fusion with GNSS, GNSS-RO and satellite altimetry based on machine learning

Global ionospheric maps (GIMs) are widely used ionospheric products, especially in Global Navigation Satellite System (GNSS) applications. They allow for instance to correct for the ionospheric delays in single-frequency applications. The input data for generating GIMs is typically obtained from dual-frequency observations at globally distributed GNSS ...
Marcel Iten, Shuyin Mao, Benedikt Soja
openaire   +2 more sources

Beyond Geostrophic and Gradient Wind: Enhancing the Estimation of Climatic Wind Fields From Radio Occultation

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Wind approximations, such as geostrophic and gradient wind, are limited in their ability to accurately represent atmospheric conditions in the presence of significant planetary wave activity. Those approximations, while widely applied in synoptic‐scale wind field estimation, fail to capture the full complexity of atmospheric dynamics under ...
J. Unegg, I. Nimac, J. Danzer
wiley   +1 more source

An Investigation of GNSS Radio Occultation Data Pattern for Temperature Monitoring and Analysis over Africa

NDT - Journal of Non-Destructive Testing
Climate change monitoring and analysis is a critical task that involves the consideration of both spatial and temporal dimensions. Theimproved spatial distribution of the global navigation satellite system (GNSS) ground-based Continuous Operating ...
Usman Sa’i Ibrahim, Kamorudeen Aleem, Tajul Ariffin Musa, Terwase Tosin Youngu, Yusuf Yakubu Obadaki, Wan Anom Wan Aris, Kelvin Tang Kang Wee   +6 more
doaj   +1 more source

Monitoring urban heat island intensity based on GNSS tomography technique

, 2023
<jats:title>Abstract</jats:title><jats:p>Monitoring urban heat island (UHI) effect is critical because it causes health problems and excessive energy consumption more energy when cooling buildings.
Ye, Shirong, Yuan, Peng, Pengfei, Xia, Peng, Wei   +3 more
core   +1 more source

Characterisation of residual ionospheric errors in bending angles using GNSS RO end-to-end simulations

, 2013
Global Navigation Satellite System (GNSS) radio occultation (RO) is an innovative meteorological remote sensing technique for measuring atmospheric parameters such as refractivity, temperature, water vapour and pressure for the improvement of numerical ...
Gottfried Kirchengast (20031621), Brett Carter (18031558), Congliang Liu (19996113), Kefei Zhang (18044098), Z Tan (11040648), M Schwaerz (20031627), Robert Norman (9699338), Yan Li (23143), Suqin Wu (7870070), Shaocheng Zhang (3710149), J Fritzer (20031624), Suelynn Choy (18030355)   +11 more
core  

Stability Assessment of Spire and PlanetiQ Receiver Clocks and Its Implications for GNSS-RO Atmospheric Profiles

Commercial SmallSats offer cost-effective alternatives to traditional GNSS radio occultation (GNSS-RO) missions through scalable constellation deployments.
Ying Xu, Sizhe Shen, Jinglei Zhang, Hongxin Zhang, Haobo Li, Zhe Li, Pengyue Sun, Xiaoming Wang, Dingyi Liu   +8 more
core   +1 more source

Combination of GNSS tomography and GNSS radio occultation to establish wet refractivity fields

, 2019
The GNSS tomography is a novel technique which uses the GNSS data for resolving a temporal and spatial field of the atmospheric water vapour above a network of receivers.
Hanna, Natalia, Weber, Robert, Möller, Gregor   +2 more
core  

Polarimetric GNSS RO aboard the PAZ satellite

, 2020
Talk delivered in Informal Seminar UK MetOffice in Great Britain, 21 February 2020 ,
openaire   +1 more source

Analyses for a Modernized GNSS Radio Occultation Receiver

, 2015
Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that exploits existing navigation signals to make global, real-time observations of the Earth's atmosphere.
Griggs, Erin R., Griggs, Erin Rose
core   +1 more source

Development Of Wideband Circularly Polarized Antennas For Remote Sensing Microsatellite

, 2018
Chiba University is developing the GAIA-I microsatellite which makes use of the Global Navigation Satellite System (GNSS) Radio Occultation (RO) and the Electron Density - Temperature Probe (EDTP) sensors.
Asif Awaludin
core