Phenomena induced by powerful HF pumping towards magnetic zenith with a frequency near the F-region critical frequency and the third electron gyro harmonic frequency [PDF]
Annales Geophysicae, 2009 Multi-instrument observational data from an experiment on 13 October 2006 at the EISCAT/HEATING facility at Tromsø, Norway are analysed. The experiment was carried out in the evening hours when the electron density in the F-region dropped, and the HF ...
N. F. Blagoveshchenskaya +6 more
doaj +6 more sources
HF Radar Sea-echo from Shallow Water [PDF]
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 +3 more
doaj +2 more sources
Calibration of Phased-Array High-Frequency Radar on an Anchored Floating Platform
Remote Sensing, 2022 Prior studies have highlighted the importance of calibrating receiver antennas in target direction-of-arrival (DOA) estimation and surface current measurement for high-frequency (HF) radar systems.
Bin Wan +4 more
doaj +1 more source
SuperDARN radar HF propagation and absorption response to the substorm expansion phase [PDF]
Annales Geophysicae, 2002 Coherent scatter HF ionospheric radar systems such as SuperDARN offer a powerful experimental technique for the investigation of the magnetospheric substorm.
J. K. Gauld +6 more
doaj +1 more source
Remote Sensing of the Polar Ice Zones with HF Radar
Remote Sensing, 2021 Radars operating in the HF band are widely used for over-the-horizon remote sensing of ocean surface conditions, ionospheric studies and the monitoring of ship and aircraft traffic.
Stuart Anderson
doaj +1 more source
Finland HF and Esrange MST radar observations of polar mesosphere summer echoes [PDF]
Annales Geophysicae, 2003 Peculiar near range echoes observed in summer with the SuperDARN HF radar in Finland are presented. The echoes were detected at four frequencies of 9, 11, 13 and 15 MHz at slant ranges of 105–250 km for about 100 min.
T. Ogawa +4 more
doaj +1 more source
Estimating Coastal Winds by Assimilating High-Frequency Radar Spectrum Data in SWAN
Sensors, 2021 Many activities require accurate wind and wave forecasts in the coastal ocean. The assimilation of fixed buoy observations into spectral wave models such as SWAN (Simulating Waves Nearshore) can provide improved estimates of wave forecasts fields.
Philip Muscarella +2 more
doaj +1 more source
, 2023 This report provides a description of the different tools developed for tackling key issues of the High Frequency Radar (HFR) community: advanced delayed time QC of HFR historical data, implementation of Best Practices, enhancing the application of HFR observations in NRT modelling assessment and Ocean State ...
Solabarrieta, Lohitzune +7 more
openaire +2 more sources
Applied Sciences, 2022 High-frequency (HF) radar data, derived from a pair of newly developed radar stations in the Pearl River Estuary (PRE) of China, were validated through comparison with in situ surface buoys, ADCP measurements, and model simulations in this study.
Langfeng Zhu +5 more
doaj +1 more source
Evaluating the surface circulation in the Ebro delta (northeastern Spain) with quality-controlled high-frequency radar measurements [PDF]
Ocean Science, 2015 The Ebro River delta is a relevant marine protected area in the western Mediterranean. In order to promote the conservation of its ecosystem and support operational decision making in this sensitive area, a three-site standard-range (13.5 MHz) CODAR ...
P. Lorente +3 more
doaj +1 more source