Results 71 to 80 of about 740 (180)

One‐Hundred Fundamental, Open Questions to Integrate Methodological Approaches in Lake Ice Research

Water Resources Research, Volume 61, Issue 5, May 2025.
Abstract The rate of technological innovation within aquatic sciences outpaces the collective ability of individual scientists within the field to make appropriate use of those technologies. The process of in situ lake sampling remains the primary choice to comprehensively understand an aquatic ecosystem at local scales; however, the impact of climate ...
Joshua Culpepper, Sapna Sharma, Grant Gunn, Madeline R. Magee, Michael F. Meyer, Eric J. Anderson, Chris Arp, Sarah W. Cooley, Wayana Dolan, Hilary A. Dugan, Claude R. Duguay, Benjamin M. Jones, Georgiy Kirillin, Robert Ladwig, Matti Leppäranta, Di Long, John J. Magnuson, Tamlin Pavelsky, Sebastiano Piccolroaz, Dale M. Robertson, Bethel G. Steele, Manu Tom, Gesa A. Weyhenmeyer, R. Iestyn Woolway, Marguerite A. Xenopoulos, Xiao Yang   +25 more
wiley   +1 more source

Feasibility Demonstration of Using the Signal‐to‐Noise Ratio Observations From Geodetic GNSS Receivers to Retrieve Dry Snow Density

Water Resources Research, Volume 61, Issue 4, April 2025.
Abstract The geodetic Global Navigation Satellite System (GNSS) receiver has been proven to retrieve snow depth using the phase change rate of the signal‐to‐noise ratio (SNR) observations. Snow density can be related to snow permittivity and is theoretically sensitive to the amplitude of the GNSS reflected signal. However, retrieving snow density using
J. Zhang, W. Wan, H. Liang, W. Ma, B. Liu, C. Liang, Z. Guo, X. Wan   +7 more
wiley   +1 more source

Review of Assimilating Spaceborne Global Navigation Satellite System Remote Sensing Data for Tropical Cyclone Forecasting

Remote Sensing
Global Navigation Satellite System (GNSS) Radio Occultation (RO) and GNSS Reflectometry (GNSS-R) are the two major spaceborne GNSS remote sensing (GNSS-RS) techniques, providing observations of atmospheric profiles and the Earth’s surface. With the rapid
Weihua Bai, Guanyi Wang, Feixiong Huang, Yueqiang Sun, Qifei Du, Junming Xia, Xianyi Wang, Xiangguang Meng, Peng Hu, Cong Yin, Guangyuan Tan, Ruhan Wu   +11 more
doaj   +1 more source

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
doaj   +1 more source

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

UAV based GNSS reflectometry

, 2023
Objectius de Desenvolupament Sostenible::11 - Ciutats i Comunitats ...
openaire   +1 more source

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
doaj   +1 more source

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