Results 61 to 70 of about 847,572 (191)

GNSS Radio Occultation: a Review of the Theory, Missions, and Products

, 2023
Radio occultation (RO) have been used for probing the atmosphere of other planets since the 1960s. With the development of Global Navigation Satellite System (GNSS) and missions with Low Earth Orbit (LEO) satellites emerged the possibility of investigations of the Earth's atmosphere with the application of RO-GNSS.
Jerez, Gabriel Oliveira, Alves, Daniele Barroca Marra, Nespolo, Raphael Silva, Monico, João Francisco Galera, Hernández-Pajares, Manuel   +4 more
openaire   +1 more source

Variation of Global Ionospheric Scintillation and Its Effect on GPS Kinematic PPP‐AR Performance During Geomagnetic Storms in Solar Cycle 25: A Statistical Analysis

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Enhanced small‐scale ionospheric irregularities during geomagnetic storms can disturb Global Navigation Satellite System (GNSS) carrier‐phase tracking and are associated with reduced stability of ambiguity‐fixed precise point positioning (PPP‐AR), but their impact on kinematic positioning remains insufficiently quantified.
Dongsheng Zhao, Qichen Zhao, Shuanglei Cui, Kefei Zhang, Longjiang Li, Wang Li, Zhongchao Shi, Craig M. Hancock   +7 more
wiley   +1 more source

GNSS radio occultation profiles in the neutral atmosphere from inversion of excess phase data

Terrestrial, Atmospheric and Oceanic Sciences, 2019
Long-term stability, global coverage and high resolution are characteristics that make the Global Navigation Satellite System (GNSS) radio occultation (RO) technique well-suitable to serve as anchor measurements for observing the Earth’s atmosphere.
Paweł Hordyniec, Cheng-Yung Huang, Chian-Yi Liu, Witold Rohm, Shu-Ya Chen   +4 more
doaj   +1 more source

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

Geophysical 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, Ying‐Hwa Kuo, James M. Done   +2 more
doaj   +1 more source

Separability of Systematic Effects in Polarimetric GNSS Radio Occultations for Precipitation Sensing [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2018
The Global Navigation Satellite System (GNSS) polarimetric effects on the propagation of radio occultations (ROs) are studied here. Polarimetric ROs have been suggested as a technique to detect heavy rain events using opportunity signals from GNSS satellites.
Sergio Tomás, Ramon Padullés, Estel Cardellach   +2 more
openaire   +2 more sources

Global Ionospheric TEC Forecasting Driven by a Unified Physical Index System via the Spectral Whitening Method

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Accurate forecasting of global ionospheric total electron content (TEC) is important for Global Navigation Satellite Systems (GNSS) performance and satellite communications. This study proposes a driver framework based on the spectral whitening method (SWM). We combine a new high‐latitude geomagnetic disturbance index with previously developed
Zhou Chen, Jiahao Sun, Jing‐song Wang, Yiwan Deng, Jianxiang Zhang, Jiahao Zeng, Lewei Fan, Zichen Xu, Jian Song, Shourong Lu   +9 more
wiley   +1 more source

Data intensive scientific analysis with grid computing [PDF]

, 2011
Data intensive scientific analysis with grid computing At the end of September 2009, a new Italian GPS receiver for radio occultation was launched from the Satish Dhawan Space Center (Sriharikota, India) on the Indian Remote Sensing OCEANSAT-2 ...
Riccardo Notarpietro, Cucca, M., Olivier Terzo, Lorenzo Mossucca, Terzo, Olivier, Mossucca, L., Cucca, Manuela, Manuela Cucca, Mossucca L, Notarpietro, Riccardo, Terzo, O., Notarpietro, R.   +11 more
core   +2 more sources

Physics‐Based Ensemble of Models for F2 Peak Parameters of the Ionosphere: Comparison With COSMIC‐2 Measurements

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Space weather events can significantly alter the ionospheric electron density, affecting signal transmission and navigation accuracy in satellite‐based systems. Consequently, there is an urgent need for reliable forecasting of the Thermosphere‐Ionosphere (TI) system.
J. Pereira, I. Fernandez‐Gomez, F. Heymann, F. Günzkofer, C. Borries, M. Schmidt   +5 more
wiley   +1 more source

Implementation of ROSA radio occultation data handling into EUMETSAT and GRAS SAF processing [PDF]

, 2012
Topic of the GRAS-SAF Visiting Scientist activity 16 has been the implementation of ROSA radio occultation data handling into EUMETSAT and GRAS SAF processing tools. ROSA data referred to observations taken on-board OCEANSAT-2 mission.
Notarpietro, Riccardo
core  

Assimilating GNSS Airborne Radio Occultation Bending Angles With MPAS–JEDI During a Sequence of Atmospheric Rivers

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 9, September 2026.
Abstract Global Navigation Satellite System (GNSS) airborne radio occultation (ARO) observations, collected during Atmospheric River Reconnaissance (AR Recon) campaigns, enhance AR sampling beyond traditional dropsondes. Assimilating ARO bending angles requires a forward operator accounting for ARO geometry and proper integration in a data assimilation
Ivette Hernández Baños, Jennifer S. Haase, Pawel Hordyniec, Bing Cao, Zhiquan Liu, Phuong‐Nghi Do   +5 more
wiley   +1 more source