Results 21 to 30 of about 6,415,065 (280)
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 +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
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Insect ventral radar cross-section polarisation dependence measurements for radar entomology [PDF]
, 2006 Radar entomology has developed such that routine long-term monitoring of insect flight through the atmospheric boundary layer is now practical. Typical entomological radars use X-band (9.4 GHz) marine transceivers with a vertical pencil beam and rotate ...
Aldhous, Anthony C., Hobbs, Stephen
core +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 +3 more
openaire +1 more source
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
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
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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 +3 more
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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. +3 more
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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 +3 more
doaj +1 more source
A semiempirical model of the normalized radar cross‐section of the sea surface 1. Background model [PDF]
Journal of Geophysical Research: Oceans, 2003 Multiscale composite models based on the Bragg theory are widely used to study the normalized radar cross‐section (NRCS) over the sea surface. However, these models are not able to correctly reproduce the NRCS in all configurations and wind wave conditions.
Kudryavtsev, V +3 more
openaire +2 more sources