Results 111 to 120 of about 222 (138)
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Bi-static and multi-frequency experiments of HFSWR
OCEANS 2009, 2009High Frequency Surface Wave Radar is currently a well-known surveillance system for the Exclusive Economic Zone. We are still trying to improve their performances and reliability. In this new research step, we are trying to assess the benefits of multi-static as well as multi-frequency configuration. The global ambition is obviously to overcome clutter
M. Menelle +4 more
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HFSWR based on synthetic impulse and aperture processing
IEE Proceedings - Radar, Sonar and Navigation, 2006A novel high-frequency surface wave radar (HFSWR) has been proposed, which is based on the principles of synthetic impulse and aperture processing. It uses multiple omnidirectional transmit antennae to simultaneously transmit a set of orthogonal waveforms, and the echoed signals are received and processed by one or multiple reception arrays.
H. Su, H. Liu, P. Shui, S. Zhang, Z. Bao
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A new method for ionospheric clutter suppression in HFSWR
Proceedings of 2011 IEEE CIE International Conference on Radar, 2011High 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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Progress in HFSWR research at Harbin Institute of Technology
2003 Proceedings of the International Conference on Radar (IEEE Cat. No.03EX695), 2004The Experimental HF Surface Over-The-Horizon Radar set up in the late of 80s has been updated by installation of multi-channel receivers with digitization at the second IF stage, new designed transmitting and receiving antennas, wideband solid-state power amplifiers, frequency synthesizer with low phase noise and flexible signal generator, a new radar ...
null Yongtan Liu +2 more
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Presegmentation-based adaptive CFAR detection for HFSWR
2012 IEEE Radar Conference, 2012Common tasks of High-Frequency Surface Wave Radars (HFSWRs) are long-range ocean state monitoring and maritime surveillance with a strong focus on the detection of ships. Due to the heterogeneous background composed of sea-clutter and external noise the application of Constant False Alarm Rate (CFAR) algorithms with a single parameter set are likely to
J. O. Hinz +4 more
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Joint Detection and Tracking for Compact HFSWR
OCEANS 2023 - Limerick, 2023Xiaotong Li +4 more
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Optimal sparse waveform design for HFSWR system
2007 International Waveform Diversity and Design Conference, 2007High frequency surface wave radar (HFSWR) systems operate in heavily congested high frequency (HF) band. It is very difficult to find continuous clear channels for the wide-band HFSWR systems. Both the conventional frequency modulated continuous wave (FMCW) and the frequency modulated interrupted continuous wave (FMICW) are not able to solve the ...
W.X. Liu, Y.L. Lu, M. Lesturgie
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Target Direction Finding in HFSWR Sea Clutter Based on FRFT
2020In high frequency surface wave radar (HFSWR), Doppler frequencies of the vessels targets may overlap the first order Doppler frequencies from the sea clutter interference. Therefor it is hard to discover the vessel targets and estimate direction of arrive (DOA) of the ship targets.
Shuai Shao +4 more
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High-Resolution Method for Primary Signal Processing in HFSWR
2022 30th European Signal Processing Conference (EUSIPCO), 2022Dragan Golubovic +2 more
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HFSWR Clutter Recognition Based on Attention DCNN
2023 IEEE International Radar Conference (RADAR), 2023Yuanbiao Li, Lei Yu, Yinsheng Wei
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