Results 81 to 90 of about 436,480 (263)

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

Response of Pacific-sector Antarctic ice shelves to the El Niño/Southern Oscillation. [PDF]

, 2018
Satellite observations over the past two decades have revealed increasing loss of grounded ice in West Antarctica, associated with floating ice shelves that have been thinning.
Adusumilli, S, Fricker, HA, Howard, S, Padman, L, Paolo, FS, Siegfried, MR   +5 more
core   +1 more source

Assimilation of SWOT Reach Water Surface Elevation Product Toward Enhanced Basin‐Scale Discharge Modeling

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract The high‐resolution measurements of surface water recorded by the recently launched Surface Water and Ocean Topography (SWOT) mission offers unprecedented opportunities toward accurate characterization of basin‐scale river discharge. This paper presents the first India‐centric study regarding the potential of assimilation of SWOT Water Surface
Manu K. Soman, Jayaluxmi Indu, Subhankar Karmakar   +2 more
wiley   +1 more source

Sea level change in the Malaysian seas from multi-satellite altimeter data [PDF]

, 2009
Seas from satellite altimetry data of the Topex, Jason-1, ERS-1, ERS-2 and Envisat missions. During the past two decades, satellite altimeter has provided its capability in measuring the global mean of sea level with precision better than 1 mm/year.
Md. Din, Ami Hassan, Mohd. Omar, Kamaludin   +1 more
core  

Long Term Assimilation of Directional Wave Data From CFOSAT in the Wave Prediction Model MFWAM

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Recently, satellite wave observations have stepped forward with the innovative measurements from the wave scatterometer SWIM of the CFOSAT mission which provides both the significant wave height (SWH) along‐track at nadir look and the directional wave spectra on off‐nadir incidence angle.
E. Bedossa, L. Aouf, D. Hauser, A. Dalphinet, H. Giordani, F. Collard   +5 more
wiley   +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

Correction of Non‐Geophysical Errors in SAR Doppler Shift for Ocean Surface Current Retrieval

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Synthetic aperture radar (SAR) data contains Doppler information on ocean surface movement, and the Doppler centroid anomaly (DCA) can be used to quantitatively retrieve ocean surface currents in the line‐of‐sight of radar. However, non‐geophysical errors (NGE) in Doppler information significantly affect retrieval accuracy. Generally, existing
Wenjia Zhao, Yawei Zhao, Yongsheng Xu, Yanlei Du, Xiaolan Qiu, Jinsong Chong   +5 more
wiley   +1 more source

Advancing Water Security and National Preparedness Through Earth Science Observations and the Earth Science Workforce

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract U.S. civil spaceborne assets represent the forefront of engineering innovation across remote sensing domains such as gravimetry, thermal radiometry, imaging spectroscopy, light detection and ranging (LiDAR), and synthetic aperture radar (SAR).
Christine M. Lee, Brandi Downs, Rashmi Shah, Erin L. Hestir, Susan Owen, David Schimel, J. T. Reager, Anthony Nguy‐Robertson, John D. Bolten, Thomas M. Parris, Charles Iceland, John Eylander, Africa Flores‐Anderson, Ryan Perkl, Venkataraman Lakshmi   +14 more
wiley   +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

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