Results 1 to 10 of about 825,597 (228)

Assessment of Commercial GNSS Radio Occultation Performance from PlanetiQ Mission

Remote Sensing
Global Navigation Satellite System (GNSS) radio occultation (RO) provides valuable 3-D atmospheric profiles with all-weather, all the time and high accuracy. However, GNSS RO mission data are still limited for global coverage.
Mohamed Zhran, Ashraf Mousa, Yu Wang, Fahdah Falah Ben Hasher, Shuanggen Jin   +4 more
doaj   +7 more sources

GEROS-ISS: GNSS REflectometry, Radio Occultation, and Scatterometry Onboard the International Space Station [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
GEROS-ISS stands for GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station (ISS). It is a scientific experiment, successfully proposed to the European Space Agency in 2011.
Jens Wickert, Estel Cardellach, Manuel Martin-Neira, Jorge Bandeiras, Laurent Bertino, Ole Baltazar Andersen, Adriano Camps, Nuno Catarino, Bertrand Chapron, Fran Fabra, Nicolas Floury, Giuseppe Foti, Christine Gommenginger, Jason Hatton, Per Hoeg, Adrian Jaggi, Michael Kern, Tong Lee, Zhijin Li, Hyuk Park, Nazzareno Pierdicca, Gerhard Ressler, Antonio Rius, Josep Rosello, Jan Saynisch, Francois Soulat, C. K. Shum, Maximilian Semmling, Ana Sousa, Jiping Xie, Cinzia Zuffada   +30 more
doaj   +5 more sources

GNSS Radio Occultation Data in the AWS Cloud

Earth and Space Science
Radio occultation (RO) by the Earth's atmosphere of the transmitted signals of the Global Navigation Satellite Systems' satellites has improved numerical weather prediction, has benefited atmospheric process studies, and benchmarked climate change by its
S. S. Leroy, A. E. McVey, S. M. Leidner, H. Zhang, H. Gleisner   +4 more
doaj   +3 more sources

Comparison of a Bottom-Up GNSS Radio Occultation Method to Measure D- and E-Region Electron Densities with Ionosondes and FIRI

Remote Sensing, 2023
High-frequency skywave propagation can be heavily impacted by D- and E-region dynamics requiring accurate global measurements to optimize performance. A standard measurement technique is to use ionosondes, but they are unable to measure below 1 MHz and ...
Dylan J. Shaver, Dong L. Wu, Nimalan Swarnalingam, Anthony L. Franz, Eugene V. Dao, Daniel J. Emmons   +5 more
doaj   +4 more sources

Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS [PDF]

Sensors, 2022
Global Navigation Satellite System (GNSS) signals generate slant tropospheric delays when they pass through the atmosphere, which is recognized as the main source of error in many spatial geodetic applications. The zenith tropospheric delay (ZTD) derived
Naifeng Fu, Mingbo Jiang, Fenghui Li, Peng Guo, Chunping Hou, Mengjie Wu, Jianming Wu, Zhipeng Wang, Liang Kan   +8 more
doaj   +2 more sources

Monitoring global climate change using GNSS radio occultation

npj Climate and Atmospheric Science, 2022
The emerging signal of climate change is now clearly evident in Global Navigation Satellite System (GNSS) radio occultation (RO) data, matching predictions made by climate models 15 years ago. The observed RO trends represent well-understood responses to
Hans Gleisner, Mark A. Ringer, Sean B. Healy   +2 more
doaj   +2 more sources

Improved models for estimating sporadic-E intensity from GNSS radio occultation measurements

Frontiers in Astronomy and Space Sciences, 2023
Several models for estimating sporadic-E intensity from Global Navigation Satellite System (GNSS) radio occultation (RO) observation have previously been developed using a single perturbation or intensity parameter, such as phase-based total electron ...
Daniel Emmons, Kyle Fitch
exaly   +2 more sources

Evaluation of Tropopause Height from Sentinel-6 GNSS Radio Occultation Using Different Methods

Remote Sensing, 2023
The tropopause is described as the distinction between the troposphere and the stratosphere, and the tropopause height (TPH) is an indicator of climate change.
Fahad Alshehri, Mohamed Zhran, Shuanggen Jin   +2 more
exaly   +2 more sources

Effect of GNSS radio occultation observations on the prediction of the 2021 Henan rainstorm

GPS Solutions, 2023
Accurately predicting heavy rainstorms remains challenging due to limited spatial and temporal measurements. Nowadays, space-borne Global Navigation Satellite System (GNSS) radio occultation (RO) data provides high spatial-resolution atmospheric ...
Shuanggen Jin
exaly   +2 more sources

Study of Ionospheric Bending Angle and Scintillation Profiles Derived by GNSS Radio-Occultation with MetOp-A Satellite

Remote Sensing, 2023
In this work, a dedicated campaign by MetOp-A satellite is conducted to monitor the ionosphere based on radio-occultation (RO) measurements provided by the onboard GNSS (Global Navigation Satellite System) Receiver for Atmospheric Sounding (GRAS).
Mohammed Mainul Hoque, Liangliang Yuan, Fabricio Prol   +2 more
exaly   +2 more sources