Results 31 to 40 of about 1,060 (148)

Evolution of the Performances of Radar Altimetry Missions from ERS-2 to Sentinel-3A over the Inner Niger Delta

Remote Sensing, 2018
Radar altimetry provides unique information on water stages of inland hydro-systems. In this study, the performance of seven altimetry missions, among the most commonly used in land hydrology (i.e., European Remote-Sensing Satellite-2 (ERS-2 ...
Cassandra Normandin, Frédéric Frappart, Adama Telly Diepkilé, Vincent Marieu, Eric Mougin, Fabien Blarel, Bertrand Lubac, Nadine Braquet, Abdramane Ba   +8 more
doaj   +1 more source

Using a Tandem Flight Configuration between Sentinel-6 and Jason-3 to Compare SAR and Conventional Altimeters in Sea Surface Signatures of Internal Solitary Waves

Remote Sensing, 2023
Satellite altimetry has been providing a continuous record of ocean measurements with numerous applications across the entire range of ocean sciences.
Jorge M. Magalhaes, Ian G. Lapa, Adriana M. Santos-Ferreira, José C. B. da Silva, Fanny Piras, Thomas Moreau, Samira Amraoui, Marcello Passaro, Christian Schwatke, Michael Hart-Davis, Claire Maraldi, Craig Donlon   +11 more
doaj   +1 more source

Greenland Ice Sheet surface roughness from Ku- and Ka-band radar altimetry surface echo strengths [PDF]

The Cryosphere
Surface roughness is an important factor to consider when modelling mass changes at the Greenland Ice Sheet (GrIS) surface (i.e., surface mass balance, SMB).
K. M. Scanlan, A. Rutishauser, S. B. Simonsen   +2 more
doaj   +1 more source

The Impact of Altimetry Corrections of Sentinel-3A Sea Surface Height in the Coastal Zone of the Northwest Atlantic

Remote Sensing, 2023
Corrections to altimeter-measured sea surface height anomalies (SSHA) have a larger proportional effect for synthetic aperture radar (SAR) altimetry than conventional, pulse-limited altimetry because of lower range noise.
Anrijs Abele, Sam Royston, Jonathan Bamber   +2 more
doaj   +1 more source

Waveform Aliasing in Satellite Radar Altimetry

IEEE Transactions on Geoscience and Remote Sensing, 2015
The full deramp pulse compression scheme employed by satellite radar altimeters digitizes each radar echo at a sampling rate matched to the chirp bandwidth. Echo power is undersampled by a factor of 2 when the power samples are simply obtained by squaring the magnitude of the echo samples, without first resampling, as is done in all altimeters to date.
Walter H. F. Smith, Remko Scharroo
openaire   +1 more source

Monitoring Water Levels and Discharges Using Radar Altimetry in an Ungauged River Basin: The Case of the Ogooué

Remote Sensing, 2018
Radar altimetry is now commonly used for the monitoring of water levels in large river basins. In this study, an altimetry-based network of virtual stations was defined in the quasi ungauged Ogooué river basin, located in Gabon, Central Africa, using ...
Sakaros Bogning, Frédéric Frappart, Fabien Blarel, Fernando Niño, Gil Mahé, Jean-Pierre Bricquet, Frédérique Seyler, Raphaël Onguéné, Jacques Etamé, Marie-Claire Paiz, Jean-Jacques Braun   +10 more
doaj   +1 more source

Estimation of Arctic Sea Ice Thickness from Chinese HY-2B Radar Altimetry Data

Remote Sensing, 2023
Sea ice thickness (SIT) is an important parameter in the study of climate change. During the past 20 years, satellite altimetry has been widely used to observe sea ice thickness.
Maofei Jiang, Wenqing Zhong, Ke Xu, Yongjun Jia   +3 more
doaj   +1 more source

Validation of Copernicus Sea Level Altimetry Products in the Baltic Sea and Estonian Lakes

Remote Sensing, 2020
Multi-mission satellite altimetry (e.g., ERS, Envisat, TOPEX/Poseidon, Jason) data have enabled a synoptic-scale view of ocean variations in past decades.
Aive Liibusk, Tarmo Kall, Sander Rikka, Rivo Uiboupin, Ülo Suursaar, Kuo-Hsin Tseng   +5 more
doaj   +1 more source

Lake studies from satellite radar altimetry

Comptes Rendus. Géoscience, 2006
For more than 10 years, satellite radar altimetry has been a successful technique for monitoring the variation in elevation of continental surface water, such as inland seas, lakes, rivers, and more recently wetland zones. The surface water level is measured within a terrestrial reference frame with a repeatability varying from 10 ...
Jean-François Crétaux, Charon Birkett
openaire   +1 more source

Co-located OLCI optical imagery and SAR altimetry from Sentinel-3 for enhanced Arctic spring sea ice surface classification

Frontiers in Remote Sensing
The Sentinel-3A and Sentinel-3B satellites, launched in February 2016 and April 2018 respectively, build on the legacy of CryoSat-2 by providing high-resolution Ku-band radar altimetry data over the polar regions up to 81° North.
Weibin Chen, Michel Tsamados, Rosemary Willatt, Rosemary Willatt, So Takao, David Brockley, Claude de Rijke-Thomas, Alistair Francis, Thomas Johnson, Jack Landy, Isobel R. Lawrence, Sanggyun Lee, Dorsa Nasrollahi Shirazi, Wenxuan Liu, Wenxuan Liu, Connor Nelson, Julienne C. Stroeve, Julienne C. Stroeve, Julienne C. Stroeve, Len Hirata, Marc Peter Deisenroth   +20 more
doaj   +1 more source