, 2020 The proliferation of HF radar systems for ocean remote sensing and maritime surveillance continues apace, with hundreds of such radars now deployed around the world.
core +1 more source
Detection and Classification of Sporadic E Using Convolutional Neural Networks
Space Weather, Volume 22, Issue 1, January 2024.Abstract In this work, convolutional neural networks (CNN) are developed to detect and characterize sporadic E (Es), demonstrating an improvement over current methods. This includes a binary classification model to determine if Es is present, followed by a regression model to estimate the Es ordinary mode critical frequency (foEs), a proxy for the ...
J. A. Ellis, D. J. Emmons, M. B. Cohen
wiley +1 more source
Adaptive Transient And Cw Rf Interference Mitigation In Hf Oth Radar: Experimental Results
, 2008 We introduce an adaptive technique for the joint mitigation of transients and continuous-wave radio-frequency co-channel interference (CW RFI) in high-frequency (HF) over-the-horizon radars (OTHRs). The performance of this technique is illustrated using data from an operational surface-wave radar (SECAR) and from recent experimental trials with sky ...
Turcaj, P., Abramovich, Y., Frazer, G.
openaire +2 more sources
A general presentation about the OTH-Radar NOSTRADAMUS
, 2006 International audienceONERA, funded by the French Ministry of Defence has conducted the realization and experimentations of the Doppler Skywave OTH Radar called NOSTRADAMUS.
Dorey, P. +7 more
core +1 more source
A case study of HF radar spectral width in the post midnight magnetic local time sector and its relationship to the polar cap boundary [PDF]
, 2002 International audienceThe aim of this paper is to advance the current understanding of the spectral width parameter observed by coherent high frequency (HF) radars. In particular, we address the relationship of a frequently observed gradient, between low
J. A. Davies +13 more
core +1 more source
Meridional motions of the afternoon radar aurora, auroral electrojets, and absorption patches under variable IMF conditions [PDF]
, 2004 International audienceThe meridional motions of the CUTLASS HF and STARE VHF coherent echoes, IMAGE equivalent electrojet currents, and IRIS absorption patches during the postnoon/early-evening event of 14 February 2000 are presented.
Uspensky, M. V. +7 more
core +2 more sources
Simultaneous HF measurements of E- and F-region Doppler velocity at large flow angles [PDF]
, 2004 International audienceData collected by the CUTLASS Finland HF radar are used to illustrate the significant difference between the cosine component of the plasma convection in the F-region and the Doppler velocity of the E-region coherent echoes observed
Koustov, A. V. +5 more
core +2 more sources
Doppler shift simulation of scattered HF signals during the Troms HF pumping experiment on 16 February 1996 [PDF]
, 2002 International audienceComparisons between bistatic scatter measurements and simulation results during the Tromsø HF pumping experiment on 16 February 1996 are made.
N. F. Blagoveshchenska +17 more
core +2 more sources
The web of laughter: frontal and limbic projections of the anterior cingulate cortex revealed by cortico-cortical evoked potential from sites eliciting laughter. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2022 Zauli FM +8 more
europepmc +1 more source
An Experimental Multi-Target Tracking of AM Radio-Based Passive Bistatic Radar System via Multi-Static Doppler Shifts. [PDF]
Sensors (Basel), 2021 Zhou X, Ma H, Xu H.
europepmc +1 more source