Multi-frequency HF radar measurements of artificial F-region field-aligned irregularities [PDF]
Annales Geophysicae, 2004 We present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility.
A. Senior +5 more
doaj +3 more sources
Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]
Annales Geophysicae, 2006 Observations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
A. Senior +4 more
doaj +3 more sources
Mapping ionospheric backscatter measured by the SuperDARN HF radars – Part 2: Assessing SuperDARN virtual height models [PDF]
Annales Geophysicae, 2008 The Super Dual Auroral Radar Network (SuperDARN) network of HF coherent backscatter radars form a unique global diagnostic of large-scale ionospheric and magnetospheric dynamics in the Northern and Southern Hemispheres.
T. K. Yeoman +7 more
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The influence of magnetospheric substorms on SuperDARN radar backscatter [PDF]
, 2008 The SuperDARN ionospheric radar network is a leading tool for investigating the near-Earth space environment. However, reductions in ionospheric backscatter have been reported during magnetospheric substorms.
Wild, James A., Grocott, A.
core +4 more sources
94 GHz Radar Backscatter Characteristics of Alpine Glacier Ice
Geophysical Research Letters, 2023 Measuring the radar backscatter characteristics of glacier ice at different frequencies and incidence angles is fundamental to predicting the glacier mapping performance of a sensor. However, such measurements at 94 GHz do not exist.
W. D. Harcourt +4 more
doaj +1 more source
Radiometric Comparison within the Sentinel-1 SAR Constellation over a Wide Backscatter Range
Remote Sensing, 2020 Radiometric calibration adjusts the measured pixel intensity to a physical property, the radar cross section (RCS). After calibration, this relationship is defined over the entire backscatter range: from low image power (near noise) up to high ...
Kersten Schmidt +3 more
doaj +1 more source
Modern spectral analysis in HF radar remote sensing. [PDF]
, 1998 High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A
core +5 more sources
Investigation of the relationship between optical auroral forms and HF radar E region backscatter [PDF]
, 2000 International audienceThe SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region.
Milan, S. E. +16 more
core +2 more sources
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
Optical, radar, and magnetic observations of magnetosheath plasma capture during a positive IMF Bz impulse [PDF]
Annales Geophysicae, 2008 We present a multi-instrument study of the ionospheric response to a northward turning of the IMF. The observations were made in the near-noon (11:00 MLT) sector on Svalbard (at 75° MLAT).
V. Safargaleev +9 more
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