Results 21 to 30 of about 1,046 (220)

High-frequency ocean radar support for Tsunami Early Warning Systems

open access: yesGeoscience Letters, 2018
A high-frequency (HF) ocean radar system is a shore-based remote sensing system to simultaneously monitor ocean surface currents, waves and wind far beyond the horizon.
Anna Dzvonkovskaya   +3 more
doaj   +1 more source

Comparison of Measured Surface Currents from High Frequency (HF) and X-Band Radar in a Marine Protected Coastal Area of the Ligurian Sea: Toward an Integrated Monitoring System

open access: yesRemote Sensing, 2020
Two different ground-based remote sensing instruments can be used for the near-real-time monitoring of surface waves and currents, namely the high frequency HF radar and the microwave X-band radar. The HF system reaches larger offshore distances at lower
Lyuba Novi   +2 more
doaj   +1 more source

Inversion of HF Radar Doppler Spectra Using a Neural Network

open access: yesJournal of Marine Science and Engineering, 2019
For a number of decades, coastal HF radar has been used to remotely measure ocean surface parameters, including waves, at distances exceeding 100 km. The information, which has value in many ocean engineering applications, is obtained using the HF radar ...
Rachael L. Hardman, Lucy R. Wyatt
doaj   +1 more source

Wind Direction Inversion from Narrow-Beam HF Radar Backscatter Signals in Low and High Wind Conditions at Different Radar Frequencies

open access: yesRemote Sensing, 2018
Land-based, high-frequency (HF) surface wave radar has the unique capability of monitoring coastal surface parameters, such as current, waves, and wind, up to 200 km off the coast.
Wei Shen, Klaus-Werner Gurgel
doaj   +1 more source

Study on the Elimination Method of Wind Field Influence in Retrieving a Sea Surface Current Field

open access: yesSensors, 2022
An along-the-track interferometric synthetic aperture radar (ATI-SAR) system can estimate the radial velocity of a moving target on the ground and on a sea surface current.
Xinzhe Yuan   +3 more
doaj   +1 more source

Ionospheric effect of HF surface wave over‐the‐horizon radar [PDF]

open access: yesRadio Science, 2006
The use of HF surface wave radar as an effective method for inspecting the environment of the ocean in the beyond‐the‐horizon area has been developing in recent years. However, because the radiating beam of the transmitting antenna is of a certain width and its electromagnetic radiating power propagates not only along the sea surface but also to the ...
Huotao Gao   +4 more
openaire   +1 more source

Wave power measurements in the Celtic Sea using HF radar [PDF]

open access: yes, 2017
: It is well established that HF radar systems located on the coast can measure surface currents from close to the coast to more than 100km offshore. They can also be used to simultaneously measure the ocean wave directional spectrum.
Wyatt, L.R., Lucy R Wyatt
core   +1 more source

Waves from compact SeaSonde® High Frequency radars in the southeastern Bay of Biscay: measurement performance under different noise and wind conditions

open access: yesFrontiers in Marine Science
Global concern on extreme events is increasing the need for real time monitoring of the wave fields in coastal areas. High Frequency (HF) radars, a remote sensing technology widely applied to measure near real time surface coastal currents with ...
Lohitzune Solabarrieta   +8 more
doaj   +1 more source

A MIMO FMCW radar approach to HFSWR [PDF]

open access: yesAdvances in Radio Science, 2011
In this paper we propose one possible approach how to apply the concept of multiple-input multiple-output (MIMO) to monostatic Frequency Modulated Continuous Wave (FMCW) High-Frequency Surface Wave Radar (HFSWR) in a maritime environment.
J. O. Hinz, U. Zölzer
doaj   +1 more source

Coast–Ship Bistatic HF Surface Wave Radar: Simulation Analysis and Experimental Verification

open access: yesRemote Sensing, 2020
The coast−ship bistatic high-frequency surface wave radar (HFSWR) not only has the anti-interference advantages of the coast-based bistatic HFSWR, but also has the advantages of maneuverability and an extended detection area of the shipborne HFSWR.
Yonggang Ji   +8 more
doaj   +1 more source

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