Results 51 to 60 of about 2,243 (94)

Joint Analysis and Morphological Characterization of HFSWR Echo Properties during Severe Typhoon Muifa

open access: yes
Investigating the dynamic evolution process of the ocean and ionosphere in sudden sea conditions poses a challenging problem. To address this objective, this study utilizes actual data from high-frequency surface wave radar (HFSWR) to analyze, validate ...
Rong Wang   +4 more
core   +1 more source

Radar de onda superficial de HF (HFSWR)

open access: yes, 2005
Este trabajo pretende presentar las características generales más importantes de un sistema de vigilancia que usa radar de Onda Superficial de HF (HFSWR).
Quezada V., Emilio   +3 more
core  

Time Synchronisation for Passive Bistatic HFSWR via Kalman‐Filtered Delay‐Locked Loop

open access: yes
Passive bistatic high‐frequency surface wave radar (HFSWR), which exploits existing noncooperative HFSWR signals as illuminators, can reduce system complexity while retaining the over‐the‐horizon (OTH) detection capability of conventional monostatic ...
Jie Song, Yaqi Cui, Wei Xiong, Yuan Lu
core   +1 more source

A Deep Learning-Based Time-Frequency Scheme for Ship Detection Using HFSWR

open access: yes
Compact High frequency surface wave radar (HFSWR) has been widely used in remote sensing of oceanic dynamics and ship targets due to its convenient deployment and low cost.
Hao Zhou   +4 more
core   +1 more source

Typhoon Early Warning and Monitoring Based on the Comprehensive Characteristics of Oceanic and Ionospheric Echoes from HFSWR: The Case of Typhoon Muifa

open access: yes
As devastating natural disasters, typhoons pose a tremendous threat to human society, making effective typhoon early warning and monitoring crucial.
Jianqiang Du   +4 more
core   +1 more source

Improved Main Lobe Cancellation Method for Suppression Directional Noise in HFSWR Systems

open access: yes
High frequency surface wave radar (HFSWR) has been successfully developed for early warning, especially for vessel target detection. However, the system’s performance is consistently constrained by external environmental noise, particularly ...
Qiang Yang   +3 more
core   +1 more source

Target Detection and Estimation for Shipborne HFSWR Based on Platform Steering Imaging

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Wang, Jiaqi   +3 more
openaire   +1 more source

Analysis and Estimation of Shipborne HFSWR Target Parameters Under the Influence of Platform Motion

IEEE Transactions on Geoscience and Remote Sensing, 2021
For onshore high-frequency surface-wave radar (HFSWR), target parameter estimation focuses mainly on distance and velocity demodulation, then on azimuth determination. However, these parameters are difficult to solve accurately for shipborne HFSWR targets due to additional modulation on the echo signal introduced by the forward and six-degree-of ...
Ling Zhang   +2 more
exaly   +3 more sources

An Improved Oblique Projection Method for Sea Clutter Suppression in Shipborne HFSWR

IEEE Geoscience and Remote Sensing Letters, 2016
Sea clutter has a major impact on the detection performance of a shipborne high-frequency surface wave radar (HFSWR) system. Due to the platform motion of shipborne HFSWR, the Doppler spectrum of the first-order sea clutter suffers from some broadening so that the targets submerged in this broadening Doppler spectrum can be hardly detected.
Junhao Xie   +2 more
exaly   +2 more sources

Simulation analysis of first order sea clutter spectrum for shipborne bistatic HFSWR

IET Conference Proceedings, 2021
Compared with onshore bistatic high frequency surface wave radar (BHFSWR) and shipborne monostatic HFSWR (MHFSWR), shipborne BHFSWR combines the common advantages of both. It is worth noting that the motion state of both mobile stations needs to be considered. In this paper, the spreading characteristics of first-order sea clutter and the doppler shift
Jie Meng
exaly   +2 more sources

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