Results 11 to 20 of about 424 (165)

Simultaneous Radio Occultation Predictions for Inter-Satellite Comparison of Bending Angle Profiles from COSMIC-2 and GeoOptics

Remote Sensing, 2021
The Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that uses International System of Units (SI) traceable GNSS signals for atmospheric limb soundings.
Yong Chen, Xi Shao, Changyong Cao, Shu-peng Ho   +3 more
doaj   +1 more source

GNSS-RO Refractivity Bias Correction Under Ducting Layer Using Surface-Reflection Signal [PDF]

Remote Sensing, 2020
Due to its high vertical resolution and cloud-penetrating capability, GNSS-Radio Occultation (RO) remote sensing technique has been utilized to observe the vertical structure of the Planetary Boundary Layer (PBL) in recent years. However, the critical refraction, or ducting, caused by large refractivity gradients usually associated with the top of the ...
Wang, Kuo-Nung, Ao, Chi O., Juárez, Manuel de la Torre   +2 more
openaire   +2 more sources

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

Stability of CubeSat Clocks and Their Impacts on GNSS Radio Occultation

Remote Sensing, 2022
Global Navigation Satellite Systems’ radio occultation (GNSS-RO) provides the upper troposphere-lower stratosphere (UTLS) vertical atmospheric profiles that are complementing radiosonde and reanalysis data. Such data are employed in the numerical weather
Amir Allahvirdi-Zadeh, Joseph Awange, Ahmed El-Mowafy, Tong Ding, Kan Wang   +4 more
doaj   +1 more source

Global tropopause height determination using GNSS radio occultation

Egyptian Journal of Remote Sensing and Space Sciences, 2023
The tropopause layer is a crucial stratum of the earth's atmosphere that attracts more interest from climate and atmospheric researchers. The observables of the global navigation satellite system (GNSS) allow for continuous and long-term research of the ...
Mohamed Zhran, Ashraf Mousa
doaj   +1 more source

Statistically analyzing the effect of ionospheric irregularity on GNSS radio occultation atmospheric measurement [PDF]

Atmospheric Measurement Techniques, 2021
The Global Navigation Satellite System (GNSS) atmospheric radio occultation (RO) has been an effective method for exploring Earth's atmosphere. RO signals propagate through the ionosphere before reaching the neutral atmosphere.
M. Li, M. Li, M. Li, M. Li, X. Yue, X. Yue, X. Yue, X. Yue   +7 more
doaj   +1 more source

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 J. Emmons, Dong L. Wu, Nimalan Swarnalingam, Nimalan Swarnalingam, Ashar F. Ali, Joseph A. Ellis, Kyle E. Fitch, Kenneth S. Obenberger   +7 more
doaj   +1 more source

Applications of GNSS-RO to Numerical Weather Prediction and Tropical Cyclone Forecast [PDF]

Atmosphere, 2020
The global navigation satellite system (GNSS) radio occultation (RO) technique is an atmospheric sounding technique that originated in the 1990s. The data provided by this approach are playing a consistently significant role in atmospheric research and related applications.
Weihua Bai, Nan Deng, Yueqiang Sun, Qifei Du, Junming Xia, Xianyi Wang, Xiangguang Meng, Danyang Zhao, Congliang Liu, Guangyuan Tan, Ziyan Liu, Xiaoxu Liu   +11 more
openaire   +2 more sources

Rádio Ocultação GNSS: Revisão Teórica, Missões e Produtos

Revista Brasileira de Cartografia, 2022
A rádio ocultação (RO) começou a ser utilizada para a sondagem da atmosfera de outros planetas a partir da década de 1960. Com o desenvolvimento do Global Navigation Satellite System (GNSS) e de missões com satélites de baixa órbita (Low Earth Orbit ...
Gabriel Oliveira Jerez, Daniele Barroca Marra Alves, Raphael Silva Nespolo, João Francisco Galera Monico, Manuel Hernández-Pajares   +4 more
doaj   +1 more source

GNSS radio occultation soundings from commercial off-the-shelf receivers on board balloon platforms [PDF]

Atmospheric Measurement Techniques, 2023
The Global Navigation Satellite System (GNSS) radio occultation (RO) technique has proven to be an effective tool for Earth atmosphere profiling. Traditional spaceborne RO satellite constellations are expensive with relatively low sampling density for ...
K. J. Nelson, K. J. Nelson, F. Xie, B. C. Chan, A. Goel, J. Kosh, T. G. R. Reid, C. R. Snyder, P. M. Tarantino   +8 more
doaj   +1 more source