Results 71 to 80 of about 740 (179)

Retrieval of Ocean Surface Wind Speed Using Reflected BPSK/BOC Signals

Remote Sensing, 2020
The Global Navigation Satellite System (GNSS) has become a valuable resource as a remote sensing technique. In the past decade, the use of reflected GNSS signals for sensing the Earth, also known as GNSS reflectometry (GNSS-R), has grown rapidly.
Hao-Yu Wang, Jyh-Ching Juang
doaj   +1 more source

Potential Applications of GNSS-R Observations over Agricultural Areas: Results from the GLORI Airborne Campaign

Remote Sensing, 2018
The aim of this study is to analyze the sensitivity of airborne Global Navigation Satellite System Reflectometry (GNSS-R) on soil surface and vegetation cover characteristics in agricultural areas.
Mehrez Zribi, Erwan Motte, Nicolas Baghdadi, Frédéric Baup, Sylvia Dayau, Pascal Fanise, Dominique Guyon, Mireille Huc, Jean Pierre Wigneron   +8 more
doaj   +1 more source

Separation of Overlapped Direct and Reflected Waveforms for Low-Altitude UAV-Based GNSS-R Altimetry

Remote Sensing
GNSS reflectometry (GNSS-R) altimetry has been widely used for retrieving surface elevation over oceans, cryosphere, and land. Recently, UAV-borne GNSS-R systems have gained attention due to their flexibility for low-altitude and localized observations ...
Ziyin Xu, Xianyi Wang, Junming Xia, Yueqiang Sun, Cheng Liu, Zhuoyan Wang, Yusen Tian, Tongsheng Qiu, Dongwei Wang   +8 more
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Signal processing for GNSS reflectometry

Traitement du signal pour la télédétection par GNSS La réflectométrie par système de navigation par satellite, ou GNSS-R, est l'étude des signaux de géolocalisation réfléchis sur la surface de la Terre. Ces signaux dits d'opportunité, souvent perçus comme des nuisances pour le bon fonctionnement des récepteurs de navigation, sont en ...
openaire   +2 more sources

GNSS Transpolar Earth Reflectometry exploriNg System (G-TERN): Mission Concept

IEEE Access, 2018
The global navigation satellite system (GNSS) Transpolar Earth Reflectometry exploriNg system (G-TERN) was proposed in response to ESA’s Earth Explorer 9 revised call by a team of 33 multi-disciplinary scientists.
Estel Cardellach, Jens Wickert, Rens Baggen, Javier Benito, Adriano Camps, Nuno Catarino, Bertrand Chapron, Andreas Dielacher, Fran Fabra, Greg Flato, Heinrich Fragner, Carolina Gabarro, Christine Gommenginger, Christian Haas, Sean Healy, Manuel Hernandez-Pajares, Per Hoeg, Adrian Jaggi, Juha Kainulainen, Shfaqat Abbas Khan, Norbert M. K. Lemke, Weiqiang Li, Son V. Nghiem, Nazzareno Pierdicca, Marcos Portabella, Kimmo Rautiainen, Antonio Rius, Ingo Sasgen, Maximilian Semmling, C. K. Shum, Francois Soulat, Andrea K. Steiner, Sebastien Tailhades, Maik Thomas, Roger Vilaseca, Cinzia Zuffada   +35 more
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UAV based GNSS reflectometry

, 2023
Objectius de Desenvolupament Sostenible::11 - Ciutats i Comunitats ...
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Estimating Backward Scattering Using GNSS-Reflectometry Measurements for Soil Moisture Retrieval

IEEE Access
Soil Moisture (SM) is a key geophysical variable that enables a better understanding of the Earth’s hydrological processes. Missions like Soil Moisture Ocean Salinity (SMOS) and Soil Moisture Active Passive (SMAP) have been the primary sources of ...
Adrian Perez-Portero, Nereida Rodriguez-Alvarez, Joan Francesc Munoz-Martin, Xavier Bosch-Lluis, Kamal Oudrhiri   +4 more
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Fundamentals and Applications of GNSS Reflectometry

This open access book presents the fundamental methods and applications of GNSS-reflected signal reception processing. On the basis of systematic analysis of GNSS signals, it delves into the typical characteristics of signals after reflection, discussing the software and hardware design of GNSS-reflected signal receivers from different perspectives ...
Dongkai Yang, Feng Wang
openaire   +2 more sources

Ocean Remote Sensing Using Spaceborne GNSS-Reflectometry: A Review

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Spaceborne global navigation satellite system reflectometry (GNSS-R) is an emerging remote sensing technology that utilizes Earth surface reflections of GNSS signals to monitor geophysical parameters.
Jinwei Bu, Xinyu Liu, Qiulan Wang, Linghui Li, Xiaoqing Zuo, Kegen Yu, Weimin Huang   +6 more
doaj   +1 more source

Optimization of Random Surface Scattering Models for RR Polarization in SoOp-R/GNSS-R Applications

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Polarization in global navigation satellite system-reflectometry (GNSS-R) or signal of opportunity-reflectometry (SoOP-R) is commonly used for retrieving geophysical parameters.
Xuerui Wu, Lixiong Chen, Jiancheng Shi
doaj   +1 more source