Results 31 to 40 of about 218 (135)

Comparative Study on Chaos Identification of Ionospheric Clutter From HFSWR

open access: yesIEEE Access, 2019
In addition to target echoes, high frequency surface wave radar (HFSWR) receives sea and ionospheric clutter. Among these clutters, the ionospheric clutter is dominant and significantly affects the detection performance of HFSWR, particularly when the ...
Lyu Zhe   +4 more
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

APO-ELM Model for Improving Azimuth Correction of Shipborne HFSWR

open access: yesRemote Sensing, 2023
Shipborne high-frequency surface wave radar (HFSWR) has a wide range of applications and plays an important role in moving target detection and tracking.
Yaning Wang   +3 more
doaj   +1 more source

Bistatic and Stereoscopic Configurations for HF Radar

open access: yesRemote Sensing, 2020
Most HF radars operate in a monostatic or quasi-monostatic configuration. The collocation of transmit and receive facilities simplifies testing and maintenance, reduces demands on communications networks, and enables the use of established and relatively
Stuart Anderson
doaj   +1 more source

Modified Multi-Mode Target Tracker for High-Frequency Surface Wave Radar

open access: yesRemote Sensing, 2018
In high-frequency surface wave radar (HFSWR), part of the radiation signal inevitably propagates upward and illuminates the target through the ionosphere due to the poor controllability of the antenna’s vertical pattern.
Mengxiao Zhao, Xin Zhang, Qiang Yang
doaj   +1 more source

Coast–Ship Bistatic HF Surface Wave Radar: Simulation Analysis and Experimental Verification

open access: yesRemote Sensing, 2020
The coast−ship bistatic high-frequency surface wave radar (HFSWR) not only has the anti-interference advantages of the coast-based bistatic HFSWR, but also has the advantages of maneuverability and an extended detection area of the shipborne HFSWR.
Yonggang Ji   +8 more
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

Vessel Target Echo Characteristics and Motion Compensation for Shipborne HFSWR under Non-Uniform Linear Motion

open access: yesRemote Sensing, 2021
For shipborne high-frequency surface wave radar (HFSWR), the movement of the ship has a great impact on the radar echo, thus affecting target detection performance.
Yonggang Ji   +6 more
doaj   +1 more source

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

Target Detection in Clutter/Interference Regions Based on Deep Feature Fusion for HFSWR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
High-frequency surface wave radar (HFSWR) is of great significance for maritime detection, but in the HFSWR echo signal, ship targets are often submerged in a variety of clutter and interference, making it difficult to detect vessels.
Maokai Wu   +3 more
doaj   +1 more source

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