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A Ka-Band Wind Geophysical Model Function Using Doppler Scatterometer Measurements from the Air-Sea Interaction Tower Experiment

Federica Polverari, Alexander Wineteer, Ernesto Rodríguez, Dragana Perkovic-Martin, Paul Siqueira, J. Thomas Farrar, Max Adam, Marc Closa Tarrés, James B. Edson
2022 Remote Sensing  
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY  ...  The results of the comparison of the GMFs with the actual data provide guidance for future efforts to fully characterize the surface backscatter mechanisms at Ka-band.  ...  Wind scatterometry at Ka-band is still a relatively new method of remote sensing of ocean surface winds [22, 23] .  ... 
doi:10.3390/rs14092067 dblp:journals/remotesensing/PolverariWRPSFA22 fatcat:twmvhu3d4vax5lhe5aphezikvy

Ku- and Ka-Band Ocean Surface Radar Backscatter Model Functions at Low-Incidence Angles Using Full-Swath GPM DPR Data

Alamgir Hossan, William Linwood Jones
2021 Remote Sensing  
This paper presents the results of the first characterization of coincident Ku- and Ka-band ocean surface normalized radar cross section measurements at earth incidence angles 0°–18° using one year of  ...  The Ka-band exhibited higher vector wind sensitivity for a low-to-moderate wind speeds regime, and the SST effects were also observed to be substantially larger at Ka-band than at Ku-band.  ...  Acknowledgments: The authors would like to thank the Precipitation Processing System (PPS) at  ... 
doi:10.3390/rs13081569 fatcat:cqnjoei2fnhdznxglfh3buuhgm

Strong Modulation of Short Wind Waves and Ka-Band Radar Return Due to Internal Waves in the Presence of Surface Films. Theory and Experiment

Stanislav A. Ermakov, Irina A. Sergievskaya, Ivan A. Kapustin
2021 Remote Sensing  
Strong variability of Ka-band radar backscattering from short wind waves on the surface of water covered with surfactant films in the presence of internal waves (IW) was studied in wave tank experiments  ...  Field observations which qualitatively illustrated the effect of strong modulation of Ka-band radar backscatter due to IW in the presence of resonance drift of surfactant films are presented.  ...  Funding: This work was performed within the State Assignment (project no. 0729-2020-0037). Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13132462 fatcat:cudzpuwkpnephhtbyemu3ku2ye

Measuring Winds and Currents with Ka-Band Doppler Scatterometry: An Airborne Implementation and Progress towards a Spaceborne Mission

Alexander Wineteer, Dragana Perkovic-Martin, Raquel Monje, Ernesto Rodríguez, Tamás Gál, Noppasin Niamsuwan, Fabien Nicaise, Karthik Srinivasan, Chad Baldi, Ninoslav Majurec, Bryan Stiles
2020 Remote Sensing  
Doppler scatterometry is a coherent burst-scatterometry technique that builds on the long heritage of spinning pencil beam scatterometers to enable the wide-swath, simultaneous measurement of ocean surface  ...  Ocean surface winds and currents are tightly coupled, essential climate variables, synoptic measurements of which require a remote sensing approach.  ...  Copyright 2020 California Institute of Technology. US government sponsorship acknowledged. Conflicts of Interest: The authors declare no conflicts of interest.  ... 
doi:10.3390/rs12061021 fatcat:3vr3wrggdzcp7m4zatibw6lzbm

Surface-based Ku- and Ka-band polarimetric radar for sea ice studies

Julienne Stroeve, Vishnu Nandan, Rosemary Willatt, Rasmus Tonboe, Stefan Hendricks, Robert Ricker, James Mead, Robbie Mallett, Marcus Huntemann, Polona Itkin, Martin Schneebeli, Daniela Krampe (+5 others)
2020 The Cryosphere  
In the scatterometer mode, the Ku- and Ka-band radars operated under a wide range of azimuth and incidence angles, continuously assessing changes in the polarimetric radar backscatter and derived polarimetric  ...  These observations allow for characterizing radar backscatter responses to changes in atmospheric and surface geophysical conditions.  ...  Data are available at the UK Polar Data Centre. The authors thank the Marine Environmental Observation, Prediction and Response Network (MEOPAR) for a postdoctoral fellowship grant to Vishnu Nandan.  ... 
doi:10.5194/tc-14-4405-2020 fatcat:6p4om2qhpvedvgkzgepnpxqsia

The Frequency Selective Effect of Radar Backscattering from Multiscale Sea Surface

Dengfeng Xie, Kun-Shan Chen, Jiangyuan Zeng
2019 Remote Sensing  
It is instructive to exploit the effect of radar frequency and observation geometry on the effective roughness scales responsible for radar backscattering so that the scattering mechanism and the scattering  ...  The sea surface essentially contains multiscale roughness with capillary waves of many sizes riding on large-scale waves that are also of many sizes.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs11020160 fatcat:dga4vqgmqfb4doxocpi3oes74m

A simplified asymptotic theory for ocean surface electromagnetic wave scattering

A. A. Mouche, B. Chapron, N. Reul
2007 Waves in Random and Complex Media  
in ocean remote sensing is the development of a consistent inversion of sea surface geometry and kinematic via the ever-increasing complement of microwave and optical techniques.  ...  in the backscattering configuration.  ...  He was 37 years of age. His inspirational contribution to our present work is obvious and beyond words. We already miss numerous answers  ... 
doi:10.1080/17455030701230261 fatcat:5m4y6eqnczgnjbazged32u7k6e

Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography

Ge Chen, Junwu Tang, Chaofang Zhao, Songhua Wu, Fangjie Yu, Chunyong Ma, Yongsheng Xu, Weibiao Chen, Yunhua Zhang, Jie Liu, Lixin Wu
2019 Frontiers in Marine Science  
(ii) The first spaceborne active OL ensures a deeper penetration depth and an all-time detection which leads to a layered characterization of the optical properties of the subsurface ocean, while also  ...  and ecosystems with a 10-m vertical interval in the euphotic layer, moving a significant step forward toward a "transparent ocean" down to the vicinity of the thermocline, both dynamically and bio-optically  ...  This research was supported by the Qingdao National Laboratory for Marine Science and Technology of China under grants numbers 2018SDKJ102 and 2015ASTP-OS15.  ... 
doi:10.3389/fmars.2019.00194 fatcat:edvx6peqrvbbpl4ajkvmclxofu

An Analytical Method for Dynamic Wave-Related Errors of Interferometric SAR Ocean Altimetry under Multiple Sea States

Yao Chen, Mo Huang, Yuanyuan Zhang, Changyuan Wang, Tao Duan
2021 Remote Sensing  
The RMSEs of Ka-band under low sea state, moderate sea state, and high sea state are 0.2670, 1.3154, and 6.6361 cm, respectively.  ...  Moreover, the RMSEs of X-band and Ku-band are also simulated and presented.  ...  Acknowledgments: We thank the editors who handled the manuscript and the anonymous reviewers for their comments towards improving this manuscript.  ... 
doi:10.3390/rs13050986 fatcat:wn6rdrhrpjba7f444if4zg4m7i

Ka-band backscattering from water surface at small incidence: A wind-wave tank study

Olivier Boisot, Sébastien Pioch, Christophe Fatras, Guillemette Caulliez, Alexandra Bringer, Pierre Borderies, Jean-Claude Lalaurie, Charles-Antoine Guérin
2015 Journal of Geophysical Research - Oceans  
We report on an experiment conducted at the large Pytheas wind-wave facility in Marseille to characterize the Ka-band radar return from water surfaces when observed at small incidence.  ...  The applicability of the present findings to oceanic as well as continental surfaces is discussed.  ...  We thank the technical staff from Pytheas and IRPHE for their assistance during the experiments.  ... 
doi:10.1002/2014jc010338 fatcat:bqaay2pzlbbgho6qhjbd2e6ooa

Importance of peakedness in sea surface slope measurements and applications

B. Chapron, V. Kerbaol, D. Vandemark, T. Elfouhaily
2000 Journal of Geophysical Research  
This idea is appliecl to observations ancl analysis of sea surface slopes as int'errecl using optical ancl microwavescattering measurements.  ...  Implications of non-Gaussian peakeclness are provided for altimeter backscatter theOl'y and for modeling wave-breaking probability. 17,195  ...  On the basis of the assul11ption that the specular point model is applicable to describe near-nadir Ku band ancl Ka bancl racial' sea surface backscatter measurements we further showecl that an unmoclelecl  ... 
doi:10.1029/2000jc900079 fatcat:npr5fhobbfhvhptjxrftqpdfg4

Sea Surface Ka-Band Doppler Measurements: Analysis and Model Development

Yury Yurovsky, Vladimir Kudryavtsev, Semyon Grodsky, Bertrand Chapron
2019 Remote Sensing  
Multi-year field measurements of sea surface Ka-band dual-co-polarized (vertical transmit–receive polarization (VV) and horizontal transmit–receive polarization (HH)) radar Doppler characteristics from  ...  Assuming universal spectral shape of energy containing sea surface waves, the wave-induced DC contribution is then expressed as a function of MTF, significant wave height, and wave peak frequency.  ...  More precisely documenting Ka-band sea surface backscatter properties is thus timely.  ... 
doi:10.3390/rs11070839 fatcat:i7yt5njvjzdunacryqpo2tyf4i

Estimating Ocean Vector Winds and Currents Using a Ka-Band Pencil-Beam Doppler Scatterometer

Ernesto Rodríguez, Alexander Wineteer, Dragana Perkovic-Martin, Tamás Gál, Bryan Stiles, Noppasin Niamsuwan, Raquel Monje
2018 Remote Sensing  
We examine the effects of Bragg-wave modulation by long waves through a Modululation Transfer Function (MTF), and show that the observed surface current dependence on winds is consistent with past Ka-band  ...  The surface current GMF at Ka-band is significantly different from that at C-band, and, above 4.5 m/s has a weak dependence on wind speed, although still dependent on wind direction.  ...  Acknowledgments: The research presented in the paper was carried out at the Jet Propulsion Laboratory,  ... 
doi:10.3390/rs10040576 fatcat:stxfbxqtejbtzfako6hrev7kma

Characterization of Surface Radar Cross Sections at W-Band at Moderate Incidence Angles

Alessandro Battaglia, Mengistu Wolde, Leo Pio D'Adderio, Cuong Nguyen, Franco Fois, Anthony Illingworth, Rolv Midthassel
2017 IEEE Transactions on Geoscience and Remote Sensing  
This paper presents the results of a recent flight campaign conducted over the Great Lakes Region and reports the first observations of the W-band normalized backscattered cross section (σ0) for V and  ...  Index Terms-Radar theory, radar surface cross sections, depolarization ratios, W-band Rolv Midthassel Rolv Midthassel, graduated at the University of Glasgow with a European Master of Engineering in Electronics  ...  Moreover, while at centimeter wavelengths great progress have been done thanks to the availability of a gamut of scatterometer data, at millimeter-wavelenghts the ocean surface backscattering mechanism  ... 
doi:10.1109/tgrs.2017.2682423 fatcat:5fzhe5hkxff5nichdimnib3sqy

Microwave Emission and Scattering from Ocean Surface Waves in the Southern Beaufort Sea

Mukesh Gupta, Randall K. Scharien, David G. Barber
2014 International Journal of Oceanography  
Estimates of the relationships between geophysical variables and microwave backscatter/emission are important for the evaluation of atmosphere-ocean interaction, as well as energy, and mass transfer across  ...  Microwave emission and backscatter are shown to be sensitive to the ocean surface physical roughness as defined by the significant wave height Hm0, compared to wind speed.  ...  Microwave C-band (5.5 GHz, 5.6 cm wavelength) backscatter is more reliable for studying surface waves than shorter wavelength Ku-, Ka-, and X-bands that are strongly influenced by capillarity and molecular  ... 
doi:10.1155/2014/872342 fatcat:slkovv7cxrgffnk3j7loxma5xy
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