Results 21 to 30 of about 2,368 (248)

Evaluation of Sea Surface Winds and Waves Retrieved From the Chinese HY-2B Data [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The wind and wave derived from the scatterometer and altimeter on board the Chinese Haiyang-2B (HY-2B) satellite were systemically evaluated in this article. The analysis of matchups between advanced scatterometer and the winds from HY-2B scatterometer with wind speeds up to 25 m/s showed a 0.78 m/s root-mean-square error (RMSE) with a 0 ...
Weizeng Shao, Tao Jiang, Xingwei Jiang, Youguang Zhang, Wei Zhou   +4 more
openaire   +3 more sources

Algorithm for Sea Surface Wind Retrieval From TerraSAR-X and TanDEM-X Data [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2014
A geophysical model function (GMF), which is denoted by XMOD2, is developed to retrieve sea surface wind field from X-band TerraSAR-X/TanDEM-X (TS-X/TD-X) data. In contrast to the previously developed XMOD1, XMOD2 consists of a nonlinear GMF, and thus, it depicts the difference between upwind and downwind of the sea surface backscatter in X-band ...
Li, Xiao Ming, Lehner, Susanne
openaire   +4 more sources

Using Semicircular Sampling to Increase Sea-Wind Retrieval Altitude with a High-Altitude UAV Scatterometer

Drones, 2022
Currently, unmanned aerial vehicles (UAVs) are widely used due to their low cost and flexibility. In particular, they are used in remote sensing as airborne platforms for various instruments.
Alexey Nekrasov, Alena Khachaturian, Colin Fidge   +2 more
doaj   +1 more source

X-band COSMO-SkyMed wind field retrieval, with application to coastal circulation modeling [PDF]

Ocean Science, 2013
In this paper, X-band COSMO-SkyMed^© synthetic aperture radar (SAR) wind field retrieval is investigated, and the obtained data are used to force a coastal ocean circulation model.
A. Montuori, P. de Ruggiero, M. Migliaccio, S. Pierini, G. Spezie   +4 more
doaj   +1 more source

Sea surface wind speed retrieval and validation with future SWOT data

Journal of Physics: Conference Series, 2021
Abstract The paper focuses on the sea surface wind speed retrieval and validation using the future SWOT data. Ka band backscatter coefficient and wind speed were simulated by using theoretical model of Quasi-specular scatter and the simulated position of observation point.
Dan Wang, Xiaojuan Kong, Pu Cheng, Zhanju Wang, Chuandong Xu   +4 more
openaire   +1 more source

On the Use of Doppler Shift for Sea Surface Wind Retrieval From SAR

IEEE Transactions on Geoscience and Remote Sensing, 2012
The synthetic aperture radar (SAR) Doppler centroid has been used to estimate the scatter line-of-sight radar velocity. In weak to moderate ocean surface current environment, the SAR Doppler centroid is dominated by the directionality and strength of wave-induced ocean surface displacements.
Mouche, Alexis, Collard, Fabrice, Chapron, Bertrand, Dagestad, Knut-Frode, Guitton, Gilles, Johannessen, Johnny A., Kerbaol, Vincent, Hansen, Morten Wergeland   +7 more
openaire   +4 more sources

An Improved Local Gradient Method for Sea Surface Wind Direction Retrieval from SAR Imagery

Remote Sensing, 2017
Sea surface wind affects the fluxes of energy, mass and momentum between the atmosphere and ocean, and therefore regional and global weather and climate.
Lizhang Zhou, Gang Zheng, Xiaofeng Li, Jingsong Yang, Lin Ren, Peng Chen, Huaguo Zhang, Xiulin Lou   +7 more
doaj   +1 more source

Study on the Elimination Method of Wind Field Influence in Retrieving a Sea Surface Current Field

Sensors, 2022
An along-the-track interferometric synthetic aperture radar (ATI-SAR) system can estimate the radial velocity of a moving target on the ground and on a sea surface current. This acquires the interference phase by combining two composite SAR images obtained by two antennas spatially separated along the direction of movement of the platform.
Yuan, Xinzhe, Wang, Jian, Han, Bing, Wang, Xiaoqing   +3 more
openaire   +4 more sources

Sea State Impacts on Wind Speed Retrievals From C-Band Radars

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017
Scatterometers, a proven technology, provide ocean wind speeds and directions that are essential in operational forecasts, monitoring of the climate, and scientific applications. While the missions and geophysical model functions are performing well, challenges remain.
Stopa, Justin, Mouche, Alexis, Chapron, Bertrand, Collard, Fabrice   +3 more
openaire   +4 more sources

A dual‐frequency approach for retrieving sea surface wind speed from TOPEX altimetry [PDF]

Journal of Geophysical Research: Oceans, 2002
More than a dozen of wind speed (U) algorithms have been proposed during the past 2 decades, as a result of a continuing effort to improve altimeter wind measurement. The progress in terms of accuracy, however, is seen to be rather slow. The reported root mean square (RMS) error of prevailing algorithms varies mostly between 1.6 and 2.0 m/s for the ...
Chen, G, Chapron, Bertrand, Ezraty, Robert, Vandemark, D   +3 more
openaire   +2 more sources