Results 61 to 70 of about 598 (182)

DOA Estimation Performance Analysis and Verification of Dual Crossed-Loop/Monopole Antenna Array

International Journal of Antennas and Propagation, 2019
The compact high-frequency surface wave radar using a crossed-loop/monopole (CLM) antenna as the receiving sensor has been widely used in ocean remote sensing and target monitoring.
Sijie Wang, Biyang Wen, Yingwei Tian
doaj   +1 more source

Generalised noise cancellation method for wave estimation by HF surface wave radar

IET Radar, Sonar & Navigation, 2014
High frequency (HF) surface wave radar (HFSWR) has been demonstrated, in many experiments and papers, to be a powerful tool for sea‐state detection. However, the availability and accuracy of the HFSWR measurements are limited by various unwanted clutter and interferences (collectively called ‘noise’) that contaminate the radar received signals ...
Wang, Wei, Wyatt, Lucy
openaire   +2 more sources

A Geometric Barycenter-Based Clutter Suppression Method for Ship Detection in HF Mixed-Mode Surface Wave Radar

Remote Sensing, 2019
The nonhomogeneous clutter is a major challenge for ship detection in high-frequency mixed-mode surface wave radar. In this paper, a geometric barycenter-based reduced-dimension space-time adaptive processing method is proposed to suppress the clutter ...
Jiazhi Zhang, Xin Zhang, Weibo Deng, Lei Ye, Qiang Yang   +4 more
doaj   +1 more source

Observation of Zenneck-Like Waves over a Metasurface Designed for Launching HF Radar Surface Wave

International Journal of Antennas and Propagation, 2016
Since the beginning of the 20th century a controversy has been continuously revived about the existence of the Zenneck Wave. This wave is a theoretical solution of Maxwell’s equations and might be propagated along the interface between the air and a ...
Florent Jangal, Nicolas Bourey, Muriel Darces, François Issac, Marc Hélier   +4 more
doaj   +1 more source

HF Radar Sea-echo from Shallow Water

Sensors, 2008
HF radar systems are widely and routinely used for the measurement of ocean surface currents and waves. Analysis methods presently in use are based on the assumption of infinite water depth, and may therefore be inadequate close to shore where the radar ...
Josh Kohut, Don Barrick, Bruce Nyden, Belinda Lipa   +3 more
doaj  

High-Speed Target Tracking Method for Compact HF Radar

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Compact high-frequency (HF) surface wave radar can be used for remote sensing of sea surface dynamic parameters, such as winds, waves, and currents, as well as hard targets, such as ships and low-altitude aircrafts.
Gan Liu, Yingwei Tian, Jing Yang, Shengbo Ma, Biyang Wen   +4 more
doaj   +1 more source

Ionospheric Clutter Model for HF Sky-Wave Path Propagation with an FMCW Source

International Journal of Antennas and Propagation, 2019
A theoretical model of the sky-wave path propagation with frequency modulated continuous wave (FMCW) source for high frequency (HF) radar is proposed in this paper.
Xuguang Yang, Aijun Liu, Changjun Yu, Linwei Wang   +3 more
doaj   +1 more source

Wind Speed and Direction Mapping with HF Radar

Remote Sensing
HF radar systems are used in many parts of the world as a part of operational coastal ocean observing systems. Their primary product is surface current mapping from the coast to a range determined by radio frequency and environmental conditions ...
Lucy R. Wyatt, John J. Green
doaj   +1 more source