Results 1 to 10 of about 439 (181)

Tsunami signature in the ionosphere: A simulation of OTH radar observations [PDF]

open access: yesRadio Science, 2011
International audienceIn the last ten years ionospheric anomalies following major earthquakes and tsunamis have been detected. Global Positioning System (GPS) and altimeters have been proven effective for this purpose, through Total Electron Content (TEC)
P Coïsson   +2 more
exaly   +3 more sources

Key Challenges in True Multistatic OTH Radar Concepts based on HF-Radar in iFURTHER

open access: yes2024 International Radar Conference (RADAR)
The system concept of a multistatic network of collaborative high frequency (HF) over-the-horizon (OTH) radar nodes has been proposed and is being tested in the European Union-funded study iFURTHER.
José-Luis Bárcena-Humanes
exaly   +3 more sources

Estimating Target Heights Based on the Earth Curvature Model and Micromultipath Effect in Skywave OTH Radar [PDF]

open access: yesJournal of Applied Mathematics, 2014
Skywave over-the-horizon (OTH) radar systems have important long-range strategic warning values. They exploit skywave propagation reflection of high frequency signals from the ionosphere, which provides the ultra-long-range surveillance capabilities to ...
Hou Chengyu, Wang Yuxin, Chen Jiawei
doaj   +2 more sources

Surface waves magnitude estimation from ionospheric signature of Rayleigh waves measured by Doppler sounder and OTH radar. [PDF]

open access: yesSci Rep, 2018
International audienceSurface waves emitted after large earthquakes are known to induce atmospheric infrasonic waves detectable at ionospheric heights using a variety of techniques, such as high frequency (HF) Doppler, global positioning system (GPS ...
Occhipinti G   +4 more
europepmc   +2 more sources

A High-Precision Ionospheric Channel Estimation Method Based on Oblique Projection and Double-Space Decomposition [PDF]

open access: yesSensors
Accurate ionospheric channel estimation is of great significance for acquisition of ionospheric structure, error correction of remote sensing data, high-precision Synthetic Aperture Radar (SAR) imaging, over-the-horizon (OTH) detection, and the ...
Zhengkai Wei   +3 more
doaj   +2 more sources

Maritime over the Horizon Sensor Integration: High Frequency Surface-Wave-Radar and Automatic Identification System Data Integration Algorithm [PDF]

open access: yesSensors, 2018
To obtain the complete operational picture of the maritime situation in the Exclusive Economic Zone (EEZ) which lies over the horizon (OTH) requires the integration of data obtained from various sensors. These sensors include: high frequency surface-wave-
Dejan Nikolic   +2 more
doaj   +2 more sources

Stacked Autoencoders for Outlier Detection in Over-the-Horizon Radar Signals. [PDF]

open access: yesComput Intell Neurosci, 2017
Detection of outliers in radar signals is a considerable challenge in maritime surveillance applications. High-Frequency Surface-Wave (HFSW) radars have attracted significant interest as potential tools for long-range target identification and outlier ...
Protopapadakis E   +5 more
europepmc   +2 more sources

Remote Sensing of the Polar Ice Zones with HF Radar

open access: yesRemote Sensing, 2021
Radars operating in the HF band are widely used for over-the-horizon remote sensing of ocean surface conditions, ionospheric studies and the monitoring of ship and aircraft traffic.
Stuart Anderson
doaj   +1 more source

Bistatic and Stereoscopic Configurations for HF Radar

open access: yesRemote Sensing, 2020
Most HF radars operate in a monostatic or quasi-monostatic configuration. The collocation of transmit and receive facilities simplifies testing and maintenance, reduces demands on communications networks, and enables the use of established and relatively
Stuart Anderson
doaj   +1 more source

Correction of ionosphere phase contamination of high‐frequency hybrid sky‐surface wave radar using wavelet transform

open access: yesIET Radar, Sonar & Navigation, 2023
Ionospheric phase contamination (IPC) is a major contributor to the imprecise retrieval of ocean dynamics parameters by the high‐frequency hybrid sky‐surface wave radar (HFHSSW).
Mengyan Feng   +5 more
doaj   +1 more source

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