Results 11 to 20 of about 420 (173)

Seeking Optimal GNSS Radio Occultation Constellations Using Evolutionary Algorithms [PDF]

Remote Sensing, 2019
Given the great achievements of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission in providing huge amount of GPS radio occultation (RO) data for weather forecasting, climate research, and ionosphere monitoring,
Xiaohua Xu, Yi Han, Jia Luo, Jens Wickert, Milad Asgarimehr   +4 more
doaj   +3 more sources

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

Uncertainty Propagation From Radio Occultation Profiles to Aggregated Atmospheric Gridded Fields

Earth and Space Science
Radio occultation is a well‐established remote sensing method that provides reliable estimates of atmospheric profiles of diverse variables, including temperature and pressure.
S. Scher, F. Ladstädter, M. Schwärz, J. Innerkofler, G. Kirchengast   +4 more
doaj   +2 more sources

Atmospheric polarimetric effects on GNSS radio occultations: the ROHP-PAZ field campaign [PDF]

Atmospheric Chemistry and Physics, 2016
This study describes the first experimental observations showing that hydrometeors induce polarimetric signatures in global navigation satellite system (GNSS) signals. This evidence is relevant to the PAZ low Earth orbiter, which will test the concept
R. Padullés, E. Cardellach, M. de la Torre Juárez, S. Tomás, F. J. Turk, S. Oliveras, C. O. Ao, A. Rius   +7 more
doaj   +4 more sources

Analysis of GNSS radio occultation data from satellite ZH-01

Earth and Planetary Physics, 2018
The electromagnetic satellite Zhangheng 01 (ZH-01) was successfully launched on February 2, 2018. The GNSS Radio Occultation (GRO) receiver on board the satellite is able to observe the occultation events of GPS and BeiDou navigation satellites.
Yan Cheng, Jian Lin, XuHui Shen, Xiang Wan, XinXing Li, WenJun Wang   +5 more
doaj   +2 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

Retrieval of the Stratospheric Density by the Star Occultation

Aerospace, 2023
The navigation by the stellar refraction is important for a LEO (Low-Earth-Orbit) satellite, especially in a GNSS (Global Navigation Satellite System)-denied environment, since it is totally autonomous.
Kedong Wang, Zhennan Li, Shaoxiong Zhang
doaj   +1 more source

An introduction to the FY3 GNOS instrument and mountain-top tests [PDF]

Atmospheric Measurement Techniques, 2014
The FY3 (Feng-Yun-3) GNOS (GNSS Occultation Sounder) mission is a GNSS (Global Navigation Satellite System) radio occultation mission of China for remote sensing of Earth's neutral atmosphere and the ionosphere.
W. H. Bai, Y. Q. Sun, Q. F. Du, G. L. Yang, Z. D. Yang, P. Zhang, Y. M. Bi, X. Y. Wang, C. Cheng, Y. Han   +9 more
doaj   +1 more source