Results 71 to 80 of about 531 (148)

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

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  

Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]

, 2011
High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core   +2 more sources

Adaptive Processing in High Frequency Surface Wave Radar [PDF]

, 2009
High-Frequency Surface Wave Radar (HFSWR) is a radar technology that offers numerous advantages for surveillance of coastal waters beyond the exclusive economic zone. However, target detection and tracking is primarily limited by ionospheric interference.
Saleh, Oliver S.
core   +1 more source

A Multistage Detection Framework Based on TFA and Multiframe Correlation for HFSWR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Maritime surveillance heavily relies on high-frequency surface wave radar (HFSWR) systems. However, clutter and interference make it difficult to accurately detect vessel targets using a single-frame detection method. This study introduces an improved time-frequency analysis (TFA) algorithm to enhance the features in single-frame detection.
Zongtai Li 0003, Gangsheng Li, Ling Zhang 0003, Lanjun Liu, Q. M. Jonathan Wu   +4 more
openaire   +2 more sources

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

Designing Laboratory for IoT Communication Infrastructure Environment for Remote Maritime Surveillance in Equatorial Areas Based on the Gulf of Guinea Field Experiences. [PDF]

Sensors (Basel), 2020
Petrovic R, Simic D, Drajic D, Cica Z, Nikolic D, Peric M.   +5 more
europepmc   +1 more source

Multi-Channel Data Acquisition Card under New Acquisition and Transmission Architecture of High Frequency Ground Wave Radar. [PDF]

Sensors (Basel), 2021
Bai Y, Zhang X, Yang Q, Yang Y, Deng W, Yao D.   +5 more
europepmc   +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

Robust Adaptive Beamforming with Optimal Covariance Matrix Estimation in the Presence of Gain-Phase Errors. [PDF]

Sensors (Basel), 2020
Yao D, Zhang X, Hu B, Yang Q, Wu X.
europepmc   +1 more source