Results 141 to 150 of about 1,492 (208)
Ionospheric Clutter Suppression in HFSWR Using Multilayer Crossed-Loop Antennas
IEEE Geoscience and Remote Sensing Letters, 2014 Ionospheric clutter resulting from undesired radio signals reflected by the ionosphere severely deteriorates the detection performance of the high-frequency surface wave radar (HFSWR) in the mid- and low-latitude regions. To solve this problem, we propose a novel antenna configuration and method, i.e., using vertically placed, coaxial, multilayer ...
Hao Zhou, Biyang Wen, Shicai Wu
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A new method for ionospheric clutter suppression in HFSWR
Proceedings of 2011 IEEE CIE International Conference on Radar, 2011 High frequency surface wave radar (HFSWR) is an effective early warning radar, but the detection performance is impacted by the ionospheric clutter seriously. In order to suppress the ionospheric clutter, a segment accumulation algorithm is proposed, based on the time-frequency characteristics of the ionospheric clutter.
null Shang Shang +2 more
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Characteristic research of ionospheric clutter in over the horizon HFSWR
IET Conference Publications, 2009 The presence of ionospheric clutter in high-frequency over the horizon surface wave radar may extremely affect the performance of radar system and degrade the capability of detecting target, so it should be suppressed. The characteristic analysis of ionospheric clutter is the foundation of studying method to suppress ionospheric clutter, so it is ...
null Jiang Wei, null Deng Weibo
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2018 International Conference on Radar (RADAR), 2018 Ionosphere clutter is one of the majority interference in High Frequency Surface Wave Radar. Duo to the ionosphere is a time-varying, non-stationary and layered lossy media, the ionosphere clutter suppression problem become a stubbornly challenge.
Zhou Jianyu, Wei Yinsheng, Xu Rongqing
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Ionospheric clutter analysis and suppression in a distributed MIMO-HFSWR system
OCEANS 2014 - TAIPEI, 2014 In distributed MIMO (multiple-input-multiple-output)-HFSWR (high frequency surface wave radar), multiple detection modes are introduced to enrich the detection information, however making ionospheric clutter more complicated. In this paper, a distributed MIMO-HFSWR system involving three monostatic radars is introduced.
Xu Xing-an +3 more
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Ionospheric clutter modelling for VHF passive radars operating at high latitudes
IET International Conference on Radar Systems 2007, 2007 Passive VHF and UHF radars which prosecute FM and television broadcasts above 50 MHz at latitudes greater than 40 degrees will occasionally be subject to large amounts clutter from the ionosphere. Conventional pulsed, active radars can mitigate against auroral clutter by appropriate gating of the transmitter waveforms and receiver samples.
Meyer
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Spread-Doppler clutter mitigation based on ionospheric irregularity learning for skywave radar
2016 IEEE 13th International Conference on Signal Processing (ICSP), 2016 The detection performance of skywave radar on slow moving targets is essentially limited by the energy of spread-Doppler clutter (SDC). Various factors may lead to SDC. It is hard to adopt a single mitigation strategy for all situations. The idea of different signal processing strategies for different regions is needed to solve such a complex problem ...
Yueyu Guo, Rongqing Xu, Yinsheng Wei
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HED-CNN based Ionospheric Clutter Extraction for HF Range-Doppler Spectrum
2022 8th Annual International Conference on Network and Information Systems for Computers (ICNISC), 2022 Xiangyuan Wang +4 more
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Extraction of ionospheric clutter in HFSWR
2010 The 2nd International Conference on Industrial Mechatronics and Automation, 2010The two main applications of High frequency surface wave radar (HFSWR) are maritime surveillance of the Exclusive Economic Zone (EEZ) and the remote sensing of the sea. Ionospheric clutter strongly limits the detection capabilities of HFSWR. In order to analyze the effect of ionospheric clutter, a method based on image processing is proposed to extract
Shang Shang, Ning Zhang, Yang Li
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