Results 91 to 100 of about 78,703 (214)

Efficient GNSS Signal Acquisition Method for GNSS/GNSS-R Software-Defined Receivers

, 2023
This thesis presents a novel acquisition algorithm for Global Navigation Satellite Systems (GNSS) that can be efficiently implemented on small digital devices such as software defined radios (SDRs) field programmable gate arrays (FPGAs). The algorithm is
Samigulin, Shamil Nailevich
core  

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

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

Software defined radio for ground and airborne GNSS reflectometry [PDF]

, 2018
Software defined radio (SDR) appears as a\ua0suitable solution for dedicated GNSS reflectometry (GNSS-R)\ua0applications. Not only does the flexibility of SDR allow for\ua0easy and rapid prototyping, but also do recent technological\ua0developments of ...
Hobiger, Thomas, G\ue4hwiler, Reto, Haas, R\ufcdiger, Strandberg, Joakim   +3 more
core  

GNSS Reflectometry on Arctic Sea Ice using a small-scale network of GNSS sensors

, 2022
American Geophysical Union Fall Meeting, 12-16 December 2022, ChicagoGNSS-Interferometric Reflectometry (GNSS-IR) utilizes the pattern in GNSS signal-to-noise ratio (SNR) observables resulting from interference between direct and reflected GNSS signals ...
Zhang, Sarah, Ruszczyk, Chester A., Elosegui, Pedro, Barrett, John, Mondal, Dhiman   +4 more
core  

Atmospheric effects resolved in airborne GNSS reflectometry by data fusion processing [PDF]

, 2022
The advent of the Global Satellite Navigation Systems (GNSS) allowed the emergence of multiple satellite, airborne and terrestrial systems for remote sensing and Earth observation that make use of GNSS signals for navigation and positioning.
Dalil, Wafa, Hoque, Mohammed Mainul, Reboul, Serge, Moreno, Mario, Stienne, Georges, Wickert, Jens, Semmling, Maximilian   +6 more
core   +1 more source

UAV based GNSS reflectometry

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

COREGAL: Exploring Galileo E5 Reflected Signals for Biomass Applications

, 2016
This paper presents a high-level view of the Combined Positioning-Reflectometry Galileo Code Receiver for Forest Management (COREGAL) System architecture, focusing on the development of a GNSS-P+R (Positioning and Reflectometry) receiver.
Silva, P., Silva, João, Cartus, Oliver, Peres, Tiago, Carlos Ruivo, Peña, O., Erickson, A., Silva, J., Peña, Orlando, Jose M. Palomo, Ruivo, C., Adam Erickson, Carvalhais, N., Leila Guerriero, Silva, Pedro F., Nuno Carvalhais, Cartus, O., Guerriero, Leila, Guerriero, L., Hill, Chris, Carvalhais, Nuno, Palomo, Jose M., Colomina, Ismael, Tiago Peres, Colomina, I., Palomo, J., Jo�o Silva, Pedro F. Silva, Orlando Pe�a, Oliver Cartus, Ismael Colomina, Hill, C., Erickson, Adam, Chris Hill, Ruivo, Carlos, Peres, T.   +35 more
core   +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