Results 101 to 110 of about 910 (213)

The Potential for Observing African Weather with GNSS Remote Sensing

Advances in Meteorology, 2015
When compared to the wide range of atmospheric sensing techniques, global navigation satellite system (GNSS) offers the advantage of operating under all weather conditions, is continuous, with high temporal and spatial resolution and high accuracy, and ...
Olalekan A. Isioye, Ludwig Combrinck, Joel O. Botai, Cilence Munghemezulu   +3 more
doaj   +1 more source

One‐Dimensional Variational Ionospheric Retrieval Using Radio Occultation Bending Angles: 1. Theory

Space Weather
A new one‐dimensional variational (1D‐Var) retrieval method for ionospheric GNSS radio occultation (GNSS‐RO) measurements is described. The forward model implicit in the retrieval calculates the bending angles produced by a one‐dimensional ionospheric ...
I. D. Culverwell, S. B. Healy, S. Elvidge   +2 more
doaj   +1 more source

Impact of YunYao GNSS-RO Refractivity Data Assimilation on Typhoon Forecasts: A Case Study of Typhoon BEBINCA (2024)

Atmosphere
The accuracy of numerical weather prediction largely depends on the quality of the initial conditions. Global Navigation Satellite System radio occultation (GNSS-RO) observations, with their high vertical resolution, play an important role in reducing ...
Liang Kan, Fenghui Li, Jinxiao Li, Manyi Huang, Pengcheng Wang, Yan Cheng, Jiawen Cui, Dan Yan, Wenxi Zhang, Chaochao He, Xuewei Liang, Zili Shen, Wen Zhou   +12 more
doaj   +1 more source

A Novel Sampling Approach in GNSS-RO Receivers with Open Loop Tracking Method

AUT Journal of Electrical Engineering, 2019
Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis.
openaire   +2 more sources

Estimativa e análise de perfis de densidade de elétrons para a região brasileira: integração de informações provenientes de rádio ocultação e de estações terrestres GNSS

Revista Cartográfica
A rádio ocultação (RO) é utilizada há mais de seis décadas para a sondagem da atmosfera de outros planetas. O advento dos Sistemas Globais de Navegação por Satélite (GNSS) e das missões com satélites de baixa órbita, permitiram novas possibilidades de ...
Gabriel Oliveira Jerez, Daniele Barroca Marra Alves, Manuel Hernández-Pajares, João Francisco Galera Monico   +3 more
doaj   +1 more source

A new Australian GNSS radio occultation data processing platform

, 2013
GNSS Radio Occultation (RO) is a robust space-borne technology for sounding the Earth's atmosphere with global coverage. The data retrieved using GNSS RO have been demonstrated to provide unprecedented advantages to operational weather analysis and ...
Brett Carter (18031558), Congliang Liu (19996113), Kefei Zhang (18044098), John Le Marshall (19981788), G Kirchengast (19995270), Robert Norman (9699338), Ying Li (38224), Shaocheng Zhang (3710149)   +7 more
core  

Quality Assessment of YUNYAO GNSS-RO Refractivity Data in the Neutral Atmosphere

Abstract. GNSS (Global Navigation Satellite System) Radio Occultation (RO) data is an important component of numerical weather prediction (NWP) systems. To incorporate more GNSS RO data into NWP systems, commercial RO data has become an excellent option. Tianjin Yunyao Aerospace Technology Co., Ltd.
Xiaoze Xu, Wei Han, Jincheng Wang, Zhiqiu Gao, Fenghui Li, Yan Cheng, Naifeng Fu   +6 more
openaire   +2 more sources

Prospects for meteotsunami detection in earth's atmosphere using GNSS observations. [PDF]

GPS Solut, 2023
Vergados P, Krishnamoorthy S, Martire L, Mrak S, Komjáthy A, Morton YTJ, Vilibić I.   +6 more
europepmc   +1 more source

Validation of Bottom-Up GNSS Radio Occultation Method to Measure D- and E-Region Electron Density

, 2023
An in-depth validation of a new bottom-up approach using GNSS Radio Occultation (GNSS-RO) data to generate electron density profiles in the D- and E-region ionosphere.
Shaver, Dylan J.
core  

Tropospheric Information Content Embedded in GNSS RO Reflected Signals

, 2010
Peer ...
Cardellach, Estel, Oliveras, Santiago, Rius, Antonio   +2 more
openaire   +1 more source