Results 21 to 30 of about 7,081 (248)

On the joint use of scattering and damping models to predict X-band co-polarized backscattering from a slick-covered sea surface

Frontiers in Marine Science, 2022
In this study, sea surface scattering with and without surfactants is predicted using the two-scale boundary perturbation model (BPM) and the advanced integral equation model (AIEM) augmented with two different damping models, i.e., the Marangoni one and
Tingyu Meng, Tingyu Meng, Ferdinando Nunziata, Andrea Buono, Xiaofeng Yang, Xiaofeng Yang, Maurizio Migliaccio   +6 more
doaj   +1 more source

SIMULATION STUDY ON THE EFFECT OF SAND DIGGING AND HEAPING ON SAR IMAGING IN THE PEARL RIVER ESTUARY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
There are frequent sand digging and heaping activities in shoal in the Pearl River Estuary (PRE). Water depth has changed in patches, which can be imaged by synthetic aperture radar (SAR).
X. Wang, H. Zhang, B. Fu, W. Guan, A. Shi   +4 more
doaj   +1 more source

Physics-Based Forward Modeling of Ocean Surface Swell Effects on SMAP L1-C NRCS Observations

Sensors, 2022
This paper examines the impact of ocean surface swell waves on near-coastal L-band high-resolution synthetic aperture radar (SAR) data collected using the National Aeronautics and Space Administration’s (NASA) Soil Moisture Active/Passive (SMAP) radar at
Shanka N. Wijesundara, Joel T. Johnson
doaj   +1 more source

An Assessment of CYGNSS Normalized Bistatic Radar Cross Section Calibration

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
A cyclone global navigation satellite system (CYGNSS) $\sigma _o$ calibration analysis is presented using version 2.0 of the Level 1 dataset available on PO.DAAC. Three separate analyzes are conducted, namely, an examination of the specular bin location (in delay) and $\sigma _o$ relationship, an investigation of the impact of recently improved
Faozi Said, Zorana Jelenak, Paul S. Chang, Seubson Soisuvarn   +3 more
openaire   +1 more source

Study of Intensive Anthropogenic Impacts of Submerged Wastewater Discharges on Marine Water Areas Using Satellite Imagery

Journal of Marine Science and Engineering, 2022
This paper focuses on a detailed analysis of coastal waters under the conditions of the intense anthropogenic impacts of submerged wastewater discharges, using optical and radar satellite images.
Valery Bondur, Viktor Zamshin
doaj   +1 more source

Quantitative Evaluation of the Effects of Large-Scale Sea Wave Components on Microwave Backscattering From Ocean Surface

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
This article quantitatively examined the effect of these long-wave components with wavelength larger than the Bragg component on radar backscattering using the series-expanded first-order small-slope approximation (SSA-1) and the Hwang sea wave spectrum ...
Dengfeng Xie, Feng Guo
doaj   +1 more source

Normalized radar backscattering cross-section and Doppler shifts of the sea surface in Ka-band [PDF]

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017
Field data taken from the Black Sea Research platform during 2009–2015 are used to develop a dual-co-polarized (VV and HH) empirical model for the sea surface normalized radar cross-section (NRCS) and Doppler Velocity (DV) in the Ka-band. A fitting function for the NRCS is the standard truncated Fourier series in azimuth with polynomial coefficients ...
Yurovsky, Yu. Yu., Kudryavtsev, V. N., Grodsky, S. A., Chapron, Bertrand   +3 more
openaire   +2 more sources

Sea Surface Wind Measurement by Airborne Weather Radar Scanning in a Wide-Size Sector

Atmosphere, 2016
We suggest a conceptual approach for measuring the near-surface wind vector over water using the airborne weather radar, in addition to its standard meteorological and navigation applications.
Alexey Nekrasov, Alena Khachaturian, Vladimir Veremyev, Mikhail Bogachev   +3 more
doaj   +1 more source

On Doppler Shifts of Breaking Waves

Remote Sensing, 2023
Field-tower-based observations were used to estimate the Doppler velocity of deep water plunging breaking waves. About 1000 breaking wave events observed by a synchronized video camera and dual-polarization Doppler continuous-wave Ka-band radar at ...
Yury Yu. Yurovsky, Vladimir N. Kudryavtsev, Semyon A. Grodsky, Bertrand Chapron   +3 more
doaj   +1 more source

Simulations of sea surface reflection for V-band O2 differential absorption radar barometry

Frontiers in Remote Sensing, 2023
This study simulates V-band sea surface reflectance and normalized radar cross-section (NRCS) for sea surface air pressure barometry using a differential absorption radar operating at three spectrally even spaced close frequency bands (65.5, 67.75 and 70.
Bing Lin, Matthew Walker Mclinden, Gerald M. Heymsfield, Yongxiang Hu, Nikki Privé, Nikki Privé, Lihua Li, Steven Harrah, Kevin Horgan, Xia Cai, Jim Carswell   +10 more
doaj   +1 more source