Results 1 to 10 of about 222 (138)

Design of an IMM-NNJPDA tracker for HFSWR

2016 17th International Radar Symposium (IRS), 2016
In this paper, an IMM-NNJPDA tracker was evaluated to test its capability of handling sharp turn motions for ships. With the flexibility of disabling one of the two models, two additional trackers are available: a Constant Velocity (CV) model NNJPDA (CV-NNJPDA) tracker and a Singer model NNJPDA (Singer-NNJPDA) tracker. All three trackers were evaluated
Zhen Ding, Peter Moo
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Remote monitoring of sea surface HFSWR

4th International Conference on Antenna Theory and Techniques (Cat. No.03EX699), 2004
The paper considers an excellent electrodynamics model of an excited sea surface when it is interpreted by spectral components of the backscattered HF signal for remotely monitored targets. A peculiarity of the application of the electrodynamics model is supposing that the excited sea surface section is a quasi-periodic random antenna array with ...
Bondarenko, B. F., Bondarchuk, G. M., Dmitriyeva, N. V., Zarudnev, I. I., Lupan, Y. A., Platonov, S. Y., Tymchuk, V. Y.   +6 more
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Adaptive cochannel interference suppression based on subarrays for HFSWR

IEEE Signal Processing Letters, 2005
The paper analyzes the characteristics of cochannel interference (CCI) in the high-frequency (HF) surface wave radar (HFSWR), which adopts the linear frequency modulated interrupted continuous wave (FMICW). CCI will influence all the range bins, including all the positive and negative frequencies, and the negative frequency range bins contain only the ...
Xianrong Wan, Hengyu Ke, Biyang Wen
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A small array HFSWR system for ship surveillance

IET International Radar Conference 2015, 2015
A HFSWR system with portable small array for ship targets surveillance has been developed recently. The antennas of the radar system contain a receiving antenna array of eight-elements and an omnidirectional transmitting antenna, which can be deployed rapidly when relocated to another radar site. The configuration and the relationship of each subsystem
Y.G. Ji, J. Zhang, Y.M. Wang, X.L. Chu, C.J. Yu, A.J. Liu, M. Li, J. Niu, L. Zhang, W.F. Sun   +9 more
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A Model for the Ionospheric Clutter in HFSWR Radar

2008 International Conference on Information Management, Innovation Management and Industrial Engineering, 2008
In order to find an effective arithmetic which can suppress the useless ionospheric clutter in a surface wave radar system, a new model for the ionospheric clutter is proposed here. Using the multiple phase-screen method used for the investigation of the HF wave propagation, the amplitude and phase scintillation of the ionospheric clutter can be ...
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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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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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HFSWR Performance Analyses in a Typical Equatorial Environment

2019 14th International Conference on Advanced Technologies, Systems and Services in Telecommunications (TELSIKS), 2019
In this paper a performance analysis of an High Frequency Surface Wave Radar (HFSWR) in a typical equatorial environment is presented. Statistical properties of HFSWR working environment (noise/clutter) and targets statistical properties are analyzed and mathematically modeled.
Snezana Puzovic, Zoran Cica, Ivan Gluvacevic, Pavle Petrovic, Dejan Nikolic   +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
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Optimum weights of DPCA processing for shipborne HFSWR

ICSP '98. 1998 Fourth International Conference on Signal Processing (Cat. No.98TH8344), 2002
The displaced phase center antenna (DPCA) can be used to detect a ship in broadened first order Bragg lines due to platform motion in shipborne HFSWR (high frequency surface wave radar). In the paper it is shown that, by an analogy with the optimum weights of MTI (moving target indicator), the DPCA processing introduced by Xie et al.
null Junhao Xie, null Yeshu Yuan, null Yongtan Liu   +2 more
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