Results 11 to 20 of about 447 (167)

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   +3 more sources

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

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
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GNSS Signal Jamming as Observed From Radio Occultation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The jamming is found to increase significantly in recent years, and its impact is evident in Global Navigation Satellite System (GNSS) radio occultation (RO) measurements, such as those from COSMIC-2.
Dong L. Wu
doaj   +2 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   +2 more sources

Effect of Multiple GNSS Integration on the Number and Spatiotemporal Coverage of Radio Occultation Events

Atmosphere, 2022
The development of global navigation satellite systems (GNSSs) and multi-system compatible radio occultation (RO) techniques provides favorable conditions and opportunities for increasing the number of occultation events and improving their ...
Congliang Liu, Yueqiang Sun, Weihua Bai, Qifei Du, Wei Li, Xi Wang, Peixian Li   +6 more
doaj   +3 more sources

Using A Sliding Window Phase Matching Method for Imaging of GNSS Radio Occultation Signals

Remote Sensing, 2021
Global Navigation Satellite System Radio Occultation (GNSS-RO) is a technique used to sound the atmosphere and derive vertical profiles of refractivity.
Thomas Sievert, Joel Rasch, Anders Carlström, Vinícius Ludwig Barbosa, Mats I. Pettersson, Viet Vu   +5 more
doaj   +3 more sources

An evaluation of GNSS radio occultation atmospheric profiles from Sentinel-6

Egyptian Journal of Remote Sensing and Space Sciences, 2023
The Global Navigation Satellite System (GNSS) radio occultation (RO) significantly impacts climate change monitoring. GNSS RO is based mainly on the refraction of the GNSS signals transmitted by satellites and received by a receiver on a Low Earth Orbit (
Mohamed Zhran
doaj   +3 more sources

A Novel Approach to Evaluate GNSS-RO Signal Receiver Performance in Terms of Ground-Based Atmospheric Occultation Simulation System

Remote Sensing, 2023
The global navigation satellite system radio occultation (GNSS-RO) is an important means of space-based meteorological observation. It is necessary to test the Global Navigation Satellite System Occultation signal receiver on the ground before the ...
Wei Li, Yueqiang Sun, Weihua Bai, Qifei Du, Xianyi Wang, Dongwei Wang, Congliang Liu, Fu Li, Shengyu Kang, Hongqing Song   +9 more
doaj   +1 more source

Application of the Fengyun 3 C GNSS occultation sounder for assessing the global ionospheric response to a magnetic storm event [PDF]

Atmospheric Measurement Techniques, 2019
The rapid advancement of global navigation satellite system (GNSS) occultation technology in recent years has made it one of the most advanced space-based remote sensing technologies of the 21st century.
W. Bai, W. Bai, W. Bai, G. Wang, G. Wang, Y. Sun, Y. Sun, Y. Sun, J. Shi, J. Shi, J. Shi, G. Yang, X. Meng, X. Meng, D. Wang, D. Wang, Q. Du, Q. Du, X. Wang, X. Wang, J. Xia, J. Xia, Y. Cai, Y. Cai, C. Liu, C. Liu, W. Li, W. Li, C. Wu, C. Wu, D. Zhao, D. Zhao, D. Wu, D. Wu, C. Liu, C. Liu   +35 more
doaj   +1 more source

Accuracy and Stability of Radio Occultation Dry Temperature Profiles from Fengyun Satellites

应用气象学报, 2023
The earth's climate has undergone significant changes due to the combined effects of natural changes and human activities. To understand the impact of climate change, the most fundamental work is to establish high-quality data required for climate ...
Liao Mi, Zhang Peng, Liu Jian, Liu Congliang, Bai Weihua, Xu Na, Chen Lin   +6 more
doaj   +1 more source