Results 71 to 80 of about 463 (152)

Study of high frequency surface wave radar (HFSWR)

, 2008
This work presents the main features of a surveillance system based on High Frequency Surface Wave RADAR (HFSWR). Nowadays, the School of Electrical Engineering, together with the Chilean Navy, is beginning the study of HFSWR technology in order to ...
Segovia, Guillermo Fernández, López, Ariel Leiva, Valencia, Raimundo Villarroel, Valencia, Emilio Quezada   +3 more
core  

Motion Parameter Identification and Motion Compensation for Shipborne HFSWR by Using the Reference RF Signal Generated at the Shore

, 2020
The shipborne high-frequency surface wave radar (HFSWR) platform produces six degrees of freedom (DOF) motion at sea, which affects the performance of radar target detection and remote sensing of ocean surface dynamics parameters. Motion compensation can
Ling Zhang, Q. M. Jonathan Wu, Ming Li, Jiong Niu, Di Zhu, Yonggang Ji   +5 more
core   +1 more source

Study on the Elimination Method of Wind Field Influence in Retrieving a Sea Surface Current Field. [PDF]

Sensors (Basel), 2022
Yuan X, Wang J, Han B, Wang X.
europepmc   +1 more source

Weak Target Detection within the Nonhomogeneous Ionospheric Clutter Background of HFSWR Based on STAP [PDF]

, 2013
High Frequency Surface Wave Radar (HFSWR) can perform the functions of ocean environment monitoring, target detection, and target tracking over the horizon. However, its system's performance is always limited by the severe ionospheric clutter environment,
Qiang Yang, Weibo Deng, Xin Zhang
core   +1 more source

Target Detection Method for High-Frequency Surface Wave Radar RD Spectrum Based on (VI)CFAR-CNN and Dual-Detection Maps Fusion Compensation

Remote Sensing
This paper proposes a method for the intelligent detection of high-frequency surface wave radar (HFSWR) targets. This method cascades the adaptive constant false alarm (CFAR) detector variability index (VI) with the convolutional neural network (CNN) to ...
Yuanzheng Ji, Aijun Liu, Xuekun Chen, Jiaqi Wang, Changjun Yu   +4 more
doaj   +1 more source

Radar de onda superficial de HF (HFSWR)

, 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, Fernández, Guillermo, Villarroel V., Raimundo, Leiva, Ariel   +3 more
core  

Spatial polarimetric time-frequency distribution based DOA estimation: combining ESPRIT with MUSIC

EURASIP Journal on Wireless Communications and Networking, 2018
Spatial spectrum estimation technology has always been the focused research project in an array signal processing of High Frequency Surface Wave Radar (HFSWR).
Aijun Liu, Fen Li, Bo Li, Qingbo Liu, Xiuhua Shi   +4 more
doaj   +1 more source

Exact modelling of the scattering of realistic sea surfaces for HFSWR applications

, 2007
International audienceAs a long term objective we would like to define the required conditions to detect oil spills, using high frequency surface wave radar (HFSWR). Assuming that the presence of oil spills on the sea surface modifies the surface tension
Laetitia Thirion, Demarty, Yaël, Marc Lesturgie, Guinvarc'H, Régis, Yael Demarty, Gobin, Vincent, Lesturgie, Marc, Vincent Gobin, Thirion-Lefevre, Laetitia, Regis Guinvarc'h   +9 more
core   +1 more source

Spatial Directional Noise Cancelation and Weak Target Detection Method Based on Beamspace and Multiple Fourth-Order Cumulants for HFSWR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
High-frequency surface wave radar (HFSWR) has been widely applied to early warning and marine remote sensing due to its over-the-horizon propagation characteristics. Noise and interference are the critical factors affecting its performance.
Dezhu Xiao, Xin Zhang, Shuo Chen, Yu Song   +3 more
doaj   +1 more source

A Hybrid Empirical–Neural Model for HFSWR False Alarm Reduction Caused by Meteo-Tsunami-Like Phenomena

The meteo-tsunami as an atmospheric phenomenon is still being researched, and its effects beyond physical ones (destruction if they hit the shore) are yet to be fully classified.
Zoran Stankovic, Vladimir Orlic, Nebojsa Doncov, Dejan Nikolic, Dejan Drajic   +4 more
core   +1 more source