Results 31 to 40 of about 7,081 (248)
Backscattering Statistics of Labeled Sentinel-1 Wave Mode Imagettes for Ten Geophysical Phenomena
Journal of Marine Science and Engineering, 2022 Synthetic aperture radar (SAR) is a sensor that is proven to have great potential in observing atmospheric and oceanic phenomena at high-spatial resolutions (∼10 m).
Ziyue Dai +3 more
doaj +1 more source
Incidence angle normalization of Wide Swath SAR data for oceanographic applications
Open Geosciences, 2016 A backscattering trend in the range direction of the signal received by Synthetic Aperture Radar (SAR) in Wide Swath (WS) mode results in a progressive reduction of brightness over images from near to far range, which affects the detection and ...
Topouzelis Konstantinos +2 more
doaj +1 more source
Remote Sensing, 2022 Compared with co-polarized (HH/VV) normalized radar cross-section (NRCS) backscattered from the sea surface, there is no saturation phenomenon in cross-polarized (HV/VH) NRCS when wind speed is greater than about 20 m/s, so cross-polarized synthetic ...
Letian Lv +4 more
doaj +1 more source
Remote Sensing, 2017 The Sentinel-1 synthetic aperture radar (SAR) allows sufficient resources for cross-pol wind speed retrievals over the ocean. In this paper, we present technical evaluation on wind retrieval from both Sentinel-1A and Sentinel-1B IW cross-pol images ...
Lanqing Huang +4 more
doaj +1 more source
Sea Ice Concentration Manifestation in Radar Signal at Low Incidence Angles Depending on Wind Speed
Remote SensingIn previous studies, the possibilities of Ku-band radar measurements at low incidence angles were investigated for the task of sea ice detection. In this paper, the sensitivity of normalized radar cross-section to sea ice concentration is investigated at
Maria Panfilova, Vladimir Karaev
doaj +1 more source
Characterization of surface clutter signal in the presence of orography for a spaceborne conically scanning W-band Doppler radar [PDF]
Atmospheric Measurement TechniquesThe Earth's surface radar reflection is one of the most important signals received by spaceborne radar systems. It is used in several scientific applications, including geolocation, terrain classification, and path-integrated attenuation estimation.
F. Manconi +4 more
doaj +1 more source
Sea Echoes for Airborne HF/VHF Radar: Mathematical Model and Simulation
Remote Sensing, 2020 Currently, shore-based HF radars are widely used for coastal observations, and airborne radars are utilized for monitoring the ocean with a relatively large coverage offshore.
Fan Ding +3 more
doaj +1 more source
SAR Image Generation of Ocean Surface Using Time-Divided Velocity Bunching Model [PDF]
Journal of the Korean Institute of Electromagnetic Engineering and Science, 2019 An efficient synthetic aperture radar (SAR) image formulation based on the velocity-bunching model is proposed for a large SAR image integration time. A time-varying ocean surface is generated based on the semi-empirical spectrum proposed by Fung and Lee.
Jae-Won Rim, Il-Suek Koh
doaj +1 more source
Sea Wind Measurement by Doppler Navigation System with X-Configured Beams in Rectilinear Flight
Remote Sensing, 2017 We suggest a conceptual approach to the measurement of the near-surface wind vector over water using a Doppler navigation system, in addition to its standard navigation capabilities. We consider a Doppler navigation system with a track-stabilized antenna
Alexey Nekrasov +6 more
doaj +1 more source
Tropical Cyclone Winds Retrieved From Synthetic Aperture Radar [PDF]
Oceanography, 2013 This paper describes algorithms used to retrieve high-resolution wind fields in tropical cyclone conditions from synthetic aperture radar (SAR) data acquired at C-band with either co-polarization or cross-polarization.
General Dynamics Advanced Information Systems +3 more
doaj +1 more source