Results 41 to 50 of about 678 (183)

A Matlab-Based virtual propagation tool: surface wave mixed-path calculator [PDF]

open access: yes, 2006
A new Matlab-Based, user-friendly virtual propagation tool (VPT) that can be used for multi-mixed path surface wave path loss calculations has been designed.
Sevgi, Levent, Uluışık, Çağatay
core   +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

Robustness of a correction method applied to a vertically deformed HFSWR on buoys [PDF]

open access: yes, 2009
International audienceThis paper presents two correction methods for vertical deformations of the receiving array belonging to HFSWR on buoys. The method inspired from Schelkunoff's representation is more robust to the deformation's uncertainty ...
Bourges, Anthony   +4 more
core   +5 more sources

A small vessel detection using a co-located multi-frequency FMCW MIMO radar [PDF]

open access: yes, 2021
Small vessels detection is a known issue due to its low radar cross section (RCS). An existing shore-based vessel tracking radar is for long-distance commercial vessels detection.
Abd Rashid, Nur Emileen   +4 more
core   +3 more sources

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

Повышение эффективности обнаружения загоризонтными РЛС с поверхностной волны надводных объектов на основе синтеза апертуры антенной системы [PDF]

open access: yes, 2021
Nowadays, over-the-horizon surface wave radars are used to solve the problems of monitoring the situation on the water surface adjacent to the border areas of the land. The main advantage of these means is the ability to detect surface objects beyond the
Алёшкин, Андрей Петрович   +3 more
core   +4 more sources

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

A Self-Regulating Multi-Clutter Suppression Framework for Small Aperture HFSWR Systems

open access: yesRemote Sensing, 2022
The problem that this paper is concerned with is High Frequency Surface Wave Radar (HFSWR) detection of desired targets against a complex interference background consisting of sea clutter, ionosphere clutter, Radio Frequency Interference (RFI) and ...
Xiaowei Ji, Qiang Yang, Linwei Wang
doaj   +1 more source

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