Results 71 to 80 of about 7,805 (237)
Characterization of the Amazon Rainforest Backscatter at X-Band Using TanDEM-X Data
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThe radiometric calibration of spaceborne SAR products plays a key role for ensuring a good performance of the whole end-to-end system and requires a precise knowledge of both the radar system and the illuminated target on ground.
Luca Dell'Amore +4 more
doaj +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer +6 more
wiley +1 more source
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars [PDF]
, 2002 International audienceWe performed a statistical analysis of the occurrence distribution of Doppler spectral width around the day-side high-latitude ionosphere using data from the conjugate radar pair composed of the CUTLASS Iceland-East radar in the ...
Milan, S. E. +23 more
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Sensitivity of L-Band SAR Backscatter to Aboveground Biomass of Global Forests
Remote Sensing, 2016 Synthetic Aperture Radar (SAR) backscatter measurements are sensitive to forest aboveground biomass (AGB), and the observations from space can be used for mapping AGB globally.
Yifan Yu, Sassan Saatchi
doaj +1 more source
High Voltage, EarlyView.ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma +4 more
wiley +1 more source
3D Visualization of Radar Backscattering Diagrams Based on OpenGL [PDF]
EURASIP Journal on Advances in Signal Processing, 2004 Summary: A digital method of calculating the radar backscattering diagrams is presented. The method uses a digital model of an arbitrary scattering object in the 3D graphics package `OpenGL' and calculates the backscattered signal in the physical optics approximation.
openaire +3 more sources
Spectral analysis in high frequency radar oceanography [PDF]
, 2006 High Frequency radar systems provide a unique opportunity to measure evolving littoral oceanic dynamics at high temporal and spatial resolution. Backscattered electromagnetic signals from ocean waves are modulated by Bragg resonant scattering.
Middleditch, Andrew
core
CUTLASS/IMAGE observations of high latitude convection features during substorms [PDF]
, 1997 International audienceThe CUTLASS Finland HF radar has been operational since February 1995. The radar frequently observes backscatter during the midnight sector from a latitude range 70?75° geographic, latitudes often associated with the polar cap ...
T.K Yeoman +8 more
core +1 more source
Unusual SuperDARN Backscatter During the 11 May 2024 Geomagnetic Storm
Space WeatherA geomagnetic storm, one of the largest in this solar cycle, was launched on 10 May 2024, producing spectacular auroral displays that could be observed across the continental United States (US) at middle and low latitudes.
B. S. R. Kunduri +9 more
doaj +1 more source
Deterministic chaos at the ocean surface: applications and interpretations [PDF]
Nonlinear Processes in Geophysics, 1998 Ocean surface, grazing-angle radar backscatter data from two separate experiments, one of which provided coincident time series of measured surface winds, were found to exhibit signatures of deterministic chaos.
A. J. Palmer +2 more
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