Wind redistribution of snow impacts the Ka- and Ku-band radar signatures of Arctic sea ice [PDF]
The Cryosphere, 2023 Wind-driven redistribution of snow on sea ice alters its topography and microstructure, yet the impact of these processes on radar signatures is poorly understood. Here, we examine the effects of snow redistribution over Arctic sea ice on radar waveforms
V. Nandan +34 more
doaj +1 more source
The electric field response to the growth phase and expansion phase onset of a small isolated substorm [PDF]
, 1997 International audienceWe capitalise on the very large field of view of the Halley HF radar to provide a comprehensive description of the electric field response to the substorm growth phase and expansion phase onset of a relatively simple isolated ...
Freeman, M.P. +4 more
core +8 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
Observations of snowpack properties to evaluate ground-based microwave remote sensing [PDF]
, 2013 Active microwave radar has been shown to have great potential for estimating snow water equivalent (SWE) globally from space. To help evaluate optimal active microwave sensor configurations to observe SWE, we evaluated ground-based Frequency Modulated ...
Emad Tajkhorshid (243146) +5 more
core +2 more sources
Ionospheric estimates of atomic oxygen concentration from charged particle measurements [PDF]
, 1971 Estimates of atomic concentration ionosphere from radar backscatter and rocket probe measurements of electron and ion temperatures and electron ...
Mahajan, K. K.
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
doaj +1 more source
The spectral characteristics of E-region radar echoes co-located with and adjacent to visual auroral arcs [PDF]
Annales Geophysicae, 2002 Simultaneous all-sky camera and HF radar observations of the visual and E-region radar aurora in the west-ward electrojet suggest a close relationship between a pair of parallel east-west-aligned auroral arcs, separated by ~ 30 km, and a region of ...
S. E. Milan +7 more
doaj +1 more source
Anomalous radar backscatter from Titan’s surface? [PDF]
Icarus, 2011 Abstract Since Cassini arrived at Saturn in 2004, its moon Titan has been thoroughly mapped by the RADAR instrument at 2-cm wavelength, in both active and passive modes. Some regions on Titan, including Xanadu and various bright hummocky bright terrains, contain surfaces that are among the most radar-bright encountered in the Solar System.
Janssen, M. A., Le Gall, A., Wye, L. C.
openaire +1 more source