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GNSS Transpolar Earth Reflectometry exploriNg System (G-TERN): Mission Concept ArchiMer
Cardellach, Estel; Wickert, Jens; Baggen, Rens; Benito, Javier; Camps, Adriano; Catarino, Nuno; Chapron, Bertrand; Dielacher, Andreas; Fabra, Fran; Flato, Greg; Fragner, Heinrich; Gabarro, Carolina; Gommenginger, Christine; Haas, Christian; Healy, Sean; Hernandez-pajares, Manuel; Hoeg, Per; Jaggi, Adrian; Kainulainen, Juha; Khan, Shfaqat Abbas; Lemke, Norbert M. K.; Li, Weiqiang; Nghiem, Son V.; Pierdicca, Nazzareno; Portabella, Marcos; Rautiainen, Kimmo; Rius, Antonio; Sasgen, Ingo; Semmling, Maximilian; Shum, C. K.; Soulat, Francois; Steiner, Andrea K.; Tailhades, Sebastien; Thomas, Maik; Vilaseca, Roger; Zuffada, Cinzia.
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. The primary objective of the mission is to quantify at high spatio-temporal resolution crucial characteristics, processes and interactions between sea ice, and other Earth system components in order to advance the understanding and prediction of climate change and its impacts on the environment and society. The objective is articulated through three key questions. 1) In a rapidly changing Arctic regime and under the resilient Antarctic sea ice trend, how will highly dynamic forcings and couplings between the various components of the ocean,...
Tipo: Text Palavras-chave: Polar science; GNSS; Reflectometry; GNSS-R; Sea ice; Altimetry; Polarimetry; Radio-occultation; Low Earth Orbiter.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00438/54994/56411.pdf
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Sea surface state measured using GPS reflected signals - art. no. 2122 ArchiMer
Rius, Antonio; Aparicio, Josep; Cardellach, Estel; Martin Neira, Manuel; Chapron, Bertrand.
We discuss an airborne experiment aimed to establish the potential of the PARIS concept (PAssive Reflectometry and Interferometry System) to retrieve small features in the sea surface topography. The date and location were chosen to coincide with a TOPEX/POSEIDON (T/P) overflight. The signals of the Global Positioning System (GPS) reflected off the sea surface are tracked and compared to the directly received ones, to compute the relative delays. The features detected in the peak tracking are likely caused by topographic and sea roughness variations. While very promising, these results open the challenge to use additional information to appropriately separate both contributions.
Tipo: Text Palavras-chave: Signal analysis; Reflectrometry; Inerferometry; Sea surface topography.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-766.pdf
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GEROS-ISS: GNSS REflectometry, Radio Occultation, and Scatterometry Onboard the International Space Station ArchiMer
Wickert, Jens; Cardellach, Estel; Martin-neira, Manuel; Bandeiras, Jorge; Bertino, Laurent; Andersen, Ole Baltazar; Camps, Adriano; Catarino, Nuno; Chapron, Bertrand; Fabra, Fran; Floury, Nicolas; Foti, Giuseppe; Gommenginger, Christine; Hatton, Jason; Hoeg, Per; Jaggi, Adrian; Kern, Michael; Lee, Tong; Li, Zhijin; Park, Hyuk; Pierdicca, Nazzareno; Ressler, Gerhard; Rius, Antonio; Rosello, Josep; Saynisch, Jan; Soulat, Francois; Shum, C. K.; Semmling, Maximilian; Sousa, Ana; Xie, Jiping; Zuffada, Cinzia.
GEROS-ISS stands for GNSS REflectometry, radio occultation, and scatterometry onboard the International Space Station (ISS). It is a scientific experiment, successfully proposed to the European Space Agency in 2011. The experiment as the name indicates will be conducted on the ISS. The main focus of GEROS-ISS is the dedicated use of signals from the currently available Global Navigation Satellite Systems (GNSS) in L-band for remote sensing of the Earth with a focus to study climate change. Prime mission objectives are the determination of the altimetric sea surface height of the oceans and of the ocean surface mean square slope, which is related to sea roughness and wind speed. These geophysical parameters are derived using reflected GNSS signals (GNSS...
Tipo: Text Palavras-chave: Global Navigation Satellite Systems (GNSS) reflectometry; GNSS radio occultation; International space station; Mean sea level; Mesoscale ocean currents.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00359/47016/46973.pdf
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