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Comparative Study on Chaos Identification of Ionospheric Clutter From HFSWR [PDF]

open access: yesIEEE Access, 2019
In addition to target echoes, high frequency surface wave radar (HFSWR) receives sea and ionospheric clutter. Among these clutters, the ionospheric clutter is dominant and significantly affects the detection performance of HFSWR, particularly when the ...
Lyu Zhe   +4 more
doaj   +4 more sources

Transductive Radar Clutter Segmentation Network for Ionospheric Inhomogeneity Clutter Suppression

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The ionosphere turbulent motions, detected by radar systems, result in a complex form of ionospheric inhomogeneity clutter. In this article, we introduce transductive radar clutter segmentation network (TRCS-Net), a deep unfolding network architecture ...
Yuanbiao Li, Lei Yu, Yinsheng Wei
doaj   +4 more sources

Ionospheric Clutter Suppression with an Auxiliary Crossed-Loop Antenna in a High-Frequency Radar for Sea Surface Remote Sensing

open access: yesJournal of Marine Science and Engineering, 2021
Ionospheric clutter is one of the main problems for high-frequency surface wave radars (HFSWRs), as it severely interferes with sea surface state monitoring and target detection.
Shuqin He   +3 more
doaj   +3 more sources

Observations of Ionospheric Clutter at Near Equatorial High Frequency Radar Stations

open access: yesRemote Sensing, 2023
The temporal variation of received clutter and noise at a pair of oceanographic high frequency radars (HFR) operating near the geomagnetic equator in the Republic of Palau is investigated.
Thomas M. Cook   +3 more
doaj   +2 more sources

Space-polarization Collaborative Suppression Method for Ionospheric Clutter in HFSWR

open access: yesLeida xuebao, 2016
High Frequency Surface Wave Radar (HFSWR) is able to receive surface target and low-flying aircraft echoes at a long-distance, but it suffers severely from ionospheric clutter.
Yang Yunlong   +3 more
doaj   +2 more sources

Intelligent Suppression Method for Ionospheric Clutter Based on Clustering and Greedy Strategy

open access: yesLeida xuebao, 2020
Clutter is a term used for unwanted echoes in electronic systems, particularly in reference to radars. Such echoes are typically returned from ground, sea, rain, animals/insects, chaff, and atmospheric turbulences, and can cause serious performance ...
Yinsheng WEI, Jianyu ZHOU, Rongqing XU
doaj   +2 more sources

Application of polarization ellipse technique for analysis of ULF magnetic fields from two distant stations in Koyna-Warna seismoactive region, West India [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2010
A new approach is developed to find the source azimuth of the ultra low frequency (ULF) electromagnetic (EM) signals believed to be emanating from well defined seismic zone.
F. Dudkin   +5 more
doaj   +4 more sources

Knowledge-Based Generalized Side-Lobe Canceller for Ionospheric Clutter Suppression in HFSWR [PDF]

open access: yesRemote Sensing, 2018
High frequency surface wave radar (HFSWR) has been successfully developed for early warning and remote sensing. However, the ionospheric clutter is a difficult challenge that can make HFSWR system inefficient.
Xin Zhang   +4 more
doaj   +2 more sources

Phase-coded pulse aperiodic transmitter coding [PDF]

open access: yes, 2009
Both ionospheric and weather radar communities have already adopted the method of transmitting radar pulses in an aperiodic manner when measuring moderately overspread targets.
I. I. Virtanen   +2 more
core   +10 more sources

Spread sea clutter suppression via prior knowledge‐based space time adaptive processing in high frequency hybrid sky‐surface wave radar

open access: yesIET Radar, Sonar & Navigation, 2023
In high frequency (HF) hybrid sky‐surface wave radar, the first‐order sea clutter broadening is severe under the action of ionospheric phase disturbance and bistatic angles.
Ya‐Jun Li   +5 more
doaj   +1 more source

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