Results 11 to 20 of about 817,854 (220)
The Journal of Engineering, 2019 Radars operating in the high-frequency (HF) band can exploit propagation modes other than line-of-sight and are hence widely employed to provide over-the-horizon surveillance and remote sensing.
Stuart Anderson
doaj +2 more sources
Societal Applications of HF Skywave Radar
Remote Sensing, 2022 After exploratory research in the 1950s, HF skywave ‘over-the-horizon’ radars (OTHR) were developed as operating systems in the 1960s for defence missions, notably the long-range detection of ballistic missiles, aircraft, and ships.
Stuart Anderson
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Bistatic and Stereoscopic Configurations for HF Radar [PDF]
Remote Sensing, 2020 Most HF radars operate in a monostatic or quasi-monostatic configuration. The collocation of transmit and receive facilities simplifies testing and maintenance, reduces demands on communications networks, and enables the use of established and relatively
Stuart Anderson
doaj +2 more sources
Multi-frequency HF radar measurements of artificial F-region field-aligned irregularities [PDF]
Annales Geophysicae, 2004 We present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility.
A. Senior +5 more
doaj +3 more sources
Mapping ionospheric backscatter measured by the SuperDARN HF radars – Part 2: Assessing SuperDARN virtual height models [PDF]
Annales Geophysicae, 2008 The Super Dual Auroral Radar Network (SuperDARN) network of HF coherent backscatter radars form a unique global diagnostic of large-scale ionospheric and magnetospheric dynamics in the Northern and Southern Hemispheres.
T. K. Yeoman +7 more
doaj +3 more sources
Modern spectral analysis in HF radar remote sensing. [PDF]
, 1998 High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A
core +6 more sources
, 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
Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter [PDF]
, 2006 International audienceObservations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented.
Tim K. Yeoman (7583066) +14 more
core +2 more sources
On the relationship between the velocity of E-region HF echoes and E B plasma drift [PDF]
, 2005 International audienceIn this study, velocities of E-region HF echoes observed by the Stokkseyri HF radar are compared with ExB plasma drifts in the F-region measured by the DMSP satellites.
D. W. Danskin +7 more
core +2 more sources
Target characteristics analysis for a shipborne HF surface wave radar
The Journal of Engineering, 2019 In this study, based on the shipborne high-frequency (HF) surface wave radar target detection application, the first-order ocean surface cross-section for the shipborne HF surface wave radar is simulated, and the relationship between the sea clutter ...
Geriletu Lu +3 more
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