A Semi-Analytical Model for Delay/Doppler Altimetry and Its Estimation Algorithm [PDF]
International audienceThe concept of delay/Doppler (DD) altimetry (DDA) has been under study since the mid-1990s, aiming at reducing the measurement noise and increasing the along-track resolution in comparison with the conventional pulse-limited ...
Boy, François +4 more
core +1 more source
An Improved Cryosat-2 Sea Ice Freeboard Retrieval Algorithm Through the Use of Waveform Fitting [PDF]
We develop an empirical model capable of simulating the mean echo power cross product of CryoSat-2 SAR and SAR In mode waveforms over sea ice covered regions.
Galin, N. +2 more
core
A Generalized Semi-Analytical model for delay/Doppler altimetry [PDF]
International audienceThis paper introduces a new model for delay/Doppler altimetry, taking into account the effect of antenna mispointing. After defining the proposed model, the effect of the antenna mispointing on the altimetric waveform is analyzed as
Boy, François +4 more
core +1 more source
Recent Arctic Sea Level Variations from Satellites [PDF]
Sea level monitoring in the Arctic region has always been an extreme challenge for remote sensing, and in particular for satellite altimetry. Despite more than two decades of observations, altimetry is still limited in the inner Arctic Ocean.
Andersen, Ole Baltazar, Piccioni, Gaia
core +1 more source
Optimising Interannual Sea Ice Thickness Variability Retrieved From CryoSat‐2
Geophysical Research LettersSatellite radar altimeters like CryoSat‐2 estimate sea ice thickness by measuring the return‐time of transmitted radar pulses, reflected from the sea ice and ocean surface, to measure the radar freeboard.
Carmen Nab +4 more
doaj +1 more source
Simulations with the sea ice model CICE documenting the impact of improved sea ice physics [PDF]
Sea ice thickness data (CryoSat-2) have been used to identify and correct shortcomings in simulating winter ice growth in the widely used sea ice model CICE.
Schroeder, David
core +1 more source
Water level analysis in Tibet using CryoSat-2
, 2019 While the water level monitoring inTibet suffers data gaps due to insufficient in situ gauge stations, the satellite altimetry serves as an efficient alternative. In this work, measurements from the CryoSat-2 mission are employed and analyzed to determine water level time series in various lakes throughout Tibetan region. The time series are calculated
openaire +3 more sources
Extension of the Molniya orbit using low-thrust propulsion [PDF]
Extension of the standard Molniya orbit using low-thrust propulsion is presented. These newly proposed, highly elliptical orbits are enabled by existing low-thrust propulsion technology, enabling new Earth Observation science and offering a new set of ...
Anderson, Pamela, Macdonald, Malcolm
core
Comparison between gravity gradients from dense CryoSat-2 altimetry and from shipborne gradiometry [PDF]
Satellite altimetry is a tool to gather information about Earth’s oceans and ice coverage on a global extent. Altimetric data can be used to monitor ice sheet changes, create bathymetric maps or analyze the sea surface.
Buss, Roman
core +1 more source
Assimilating Summer Sea‐Ice Thickness Observations Improves Arctic Sea‐Ice Forecast
Geophysical Research LettersAccurate Arctic sea‐ice forecasting for the melt season is still a major challenge because of the lack of reliable pan‐Arctic summer sea‐ice thickness (SIT) data.
Ruizhe Song +4 more
doaj +1 more source