Results 121 to 130 of about 531 (148)

Multi-Target Pairing Method Based on PM-ESPRIT-like DOA Estimation for T/R-R HFSWR

Remote Sensing
The transmit/receive-receive (T/R-R) synergetic High Frequency Surface Wave Radar (HFSWR) has increasingly attracted attention due to its high localization accuracy, but multi-target pairing needs to be performed before localization in multi-target ...
Xiaochuan Wu, Xin Zhang, Shujie Li
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HFSWR based on synthetic impulse and aperture processing

IEE Proceedings - Radar, Sonar and Navigation, 2006
A 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
openaire   +1 more source

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, null Zhang Ning, null Li Yang   +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), 2004
The 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, null Rongqing Xu, null Ning Zhang   +2 more
openaire   +1 more source

Presegmentation-based adaptive CFAR detection for HFSWR

2012 IEEE Radar Conference, 2012
Common 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, M. Holters, U. Zolzer, A. Gupta, T. Fickenscher   +4 more
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STAP process of shipborne HFSWR motion compensation

2012 IEEE 11th International Conference on Signal Processing, 2012
In this paper, analysis of the broadening effect of the first-order sea clutter in the HFSWR (High Frequeny Surface Waves Radar) radar system of moving shipborne platform is given. The platform is moving in six degrees of freedom (DOF) and the model of movement has been built.
Zhenyuan Ji, Zaiyang Duan, Junhao Xie, Yang Li   +3 more
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Optimal sparse waveform design for HFSWR system

2007 International Waveform Diversity and Design Conference, 2007
High 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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Maritime surveillance using multi-frequency HFSWR

OCEANS 2016 - Shanghai, 2016
In these decades, great interest has been directed toward high frequency surface wave radars (HFSWR) as long range early warning tools in maritime surveillance. But HFSWR exhibit some shortcomings that need to be taken into account when detecting targets, such as poor azimuth resolution and significant presence of clutter.
Zezong Chen, Chao He, Chen Zhao, Longgang Zhang   +3 more
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Joint Detection and Tracking for Compact HFSWR

OCEANS 2023 - Limerick, 2023
Xiaotong Li, Weifeng Sun, Yonggang Ji, Yongshou Dai, Weimin Huang   +4 more
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Experimental analysis of sea clutter in shipborne HFSWR

IEE Proceedings - Radar, Sonar and Navigation, 2001
The spreading of the dominant first order Bragg lines in shipborne HFSWR (high-frequency surface wave radar) severely obscures targets with Doppler frequencies within the spreading domain. STAP (space-time adaptive processing) is one of the effective methods for solving the problem.
J. Xie, Y. Yuan, Y. Liu
openaire   +1 more source