Results 31 to 40 of about 160 (97)

Stationary Time Statistical Property of Ionospheric Clutter in High-Frequency Surface-Wave Radar

open access: yesJournal of Electrical and Computer Engineering, 2019
In HFSWR (high-frequency surface-wave radar) system, the detection performance is impacted seriously by ionospheric clutter. Frequency selection is an effective method to avoid the effect of ionospheric clutter.
Shang Shang   +3 more
doaj   +1 more source

Introduction to Coastal HF Maritime Surveillance Radars

open access: yesPolish Maritime Research, 2019
This paper presents the main technical characteristics and working performances of coastal maritime surveillance radars, such as low-power High-Frequency Surface Wave Radars (HFSWR) and Over the Horizon Radars (OTHR). These radars have demonstrated to be
Ilcev Dimov Stojce
doaj   +1 more source

A Motion Compensation Method for Shipborne HFSWR by Using Dual Reference RF Signals Generated Onshore

open access: yesRemote Sensing, 2022
The echo of shipborne high-frequency surface wave radar (HFSWR) is modulated by six-degrees-of-freedom (6-DOF) motion, affecting the detection of the target and the remote sensing of ocean surface dynamics parameters.
Maorong Chen   +6 more
doaj   +1 more source

MIMO High Frequency Surface Wave Radar Using Sparse Frequency FMCW Signals

open access: yesInternational Journal of Antennas and Propagation, 2017
The heavily congested radio frequency environment severely limits the signal bandwidth of the high frequency surface wave radar (HFSWR). Based on the concept of multiple-input multiple-output (MIMO) radar, we propose a MIMO sparse frequency HFSWR system ...
Mengguan Pan, Baixiao Chen
doaj   +1 more source

Simultaneous Altitude and RCS Estimation with Propagation Attenuation in Bistatic HFSWR

open access: yesInternational Journal of Antennas and Propagation, 2013
High frequency surface wave radar (HFSWR) is traditionally unable to detect target altitude information. To simultaneously estimate the target altitude and radar cross-sections (RCS) with bistatic HFSWR, a novel estimation model is proposed with the ...
Zhao Kongrui   +3 more
doaj   +1 more source

Coverage Area Analysis of Combined Sky-Wave and Surface-Wave Monostatic High Frequency Radar

open access: yesIEEE Access, 2019
High-frequency combined sky-wave and surface-wave monostatic radar (CSSM-HF RADAR) is a new type of radar system inspired by the skywave components of high-frequency surface-wave radar (HFSWR). The new type of radar uses the combined propagation paths of
Mengxiao Zhao   +3 more
doaj   +1 more source

A New Demodulation and Modulation Method Designed for FMCW Radar

open access: yesJournal of Electrical and Computer Engineering, 2010
An efficient demodulation method designed for FMCW (Frequency-Modulated Continuous Wave) radar is presented. It is a kind of modified DFT (IDFT) algorithm; the spectrum segment of interest can be easily extracted from the original signal without ...
Wei Shen, Biyang Wen
doaj   +1 more source

An Orthogonal Projection Algorithm to Suppress Interference in High-Frequency Surface Wave Radar

open access: yesRemote Sensing, 2018
High-frequency surface wave radar (HFSWR) has been widely applied in sea-state monitoring, and its performance is known to suffer from various unwanted interferences and clutters.
Zezong Chen, Fei Xie, Chen Zhao, Chao He
doaj   +1 more source

Improved Amplitude-Phase Calibration Method of Nonlinear Array for Wide-Beam High-Frequency Surface Wave Radar

open access: yesRemote Sensing, 2023
The amplitude and phase errors in array elements lead to uncertainties in the estimation of arrival angles (DOA), which, in turn, affect the accuracy of current measurements for high-frequency surface wave radar (HFSWR). To address this issue, this paper
Wei Fu   +5 more
doaj   +1 more source

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