Results 41 to 50 of about 788,534 (221)

Validation of HF Radar Measurements [PDF]

Oceanography, 1997
made? H F RADARS ARE A UNIQUE and powerful tool for measuring surface currents. They provide an unpa ra l l e l ed window into the spat ial var ia t ions of near-surface currents. But oceanographers who are more accus tomed to measur ing currents with instruments that actually get wet may reasonably ask how accurate can such remote measurements be made?
Rick Chapman, Hans Graber
openaire   +1 more source

D region HF radar echoes associated with energetic particle precipitation and pulsating aurora [PDF]

, 2008
Milan et al. (2001) identified a class of narrow, slow-moving HF radar backscatter echoes which originate between altitudes of 80 and 100 km, the ionospheric D- and lower E-regions.
Milan, S.E., S. E. Milan, K. Hosokawa, Yamagishi, H., N. Sato, Lester, M., F. Honary, Hosokawa, K., Honary, F., Sato, N., M. Lester, H. Yamagishi   +11 more
core   +2 more sources

Letter to the Editor: First complementary observations by ionospheric tomography, the EISCAT Svalbard radar and the CUTLASS HF radar [PDF]

Annales Geophysicae, 1998
Experimental results are presented from ionospheric tomography, the EISCAT Svalbard radar and the CUTLASS HF radar. Tomographic measurements on 10 October 1996, showing a narrow, field-aligned enhancement in electron density in the post-noon sector of
C. N. Mitchell, I. K. Walker, S. E. Pryse, I. Kersley, I. W. McCrea, T. B. Jones   +5 more
doaj   +1 more source

Investigation of the relationship between optical auroral forms and HF radar E region backscatter [PDF]

, 2000
International audienceThe SuperDARN HF radars have been employed in the past to investigate the spectral characteristics of coherent backscatter from L-shell aligned features in the auroral E region.
Milan, S. E., N. Sato, Lester, M., H. Takizawa (7612496), Villain, J.-P., J. -p. Villain, Takizawa, H., M. Lester, N. Sato (7606136), Milan, S.E., S. E. Milan, Stephen E. Milan (7612220), J. P. Villain (7612424), J.-P. Villain, Mark Lester (6477935), Sato, N., H. Takizawa   +16 more
core   +2 more sources

First-order Sea Clutter Modeling and Simulation of High Frequency Passive Radar

Leida xuebao, 2015
High Frequency (HF) passive radar is a typical bistatic radar, and the modeling and simulation of sea clutter in bistatic radar are worth researching for HF passive radar.
Cheng Feng, Zeng Qing-ping, Gong Zi-ping
doaj   +1 more source

High resolution observations of spectral width features associated with ULF wave signatures in artificial HF radar backscatter [PDF]

, 2004
International audienceThe EISCAT high power heating facility at Tromsø, northern Norway, has been utilised to generate artificial radar backscatter in the fields of view of the CUTLASS HF radars.
Woodfield, E.E., Dhillon, R. S., J. A. Davies (4412452), Milan, S.E., T. K. Yeoman, R. S. Dhillon, L. J. Baddeley (7590143), D. M. Wright, E. E. Woodfield (7590071), E. E. Woodfield, Yeoman, T. K., Woodfield, E. E., J. A. Davies, Tim K. Yeoman (7583066), Davies, J.A., Milan, S. E., Wright, D.M., Lester, M., L. J. Baddeley, Wright, D. M., Steve E. Milan (7589666), M. Lester, R. Dhillon (7590146), M. Lester (7589660), Davies, J. A., S. E. Milan, D. M. Wright (7583069), Baddeley, L. J., Dhillion, R.S., Yeoman, T.K., Baddeley, L.J.   +30 more
core   +2 more sources

Introduction to Coastal HF Maritime Surveillance Radars

Polish Maritime Research, 2019
This paper presents the main technical characteristics and working performances of coastal maritime surveillance radars, such as low-power High-Frequency Surface Wave Radars (HFSWR) and Over the Horizon Radars (OTHR). These radars have demonstrated to be
Ilcev Dimov Stojce
doaj   +1 more source

Remote Observation of a Small Meteotsunami in the Bight of Benin Using HF Radar Operating in Lower HF Band

IEEE Access, 2019
High-frequency (HF) surface-wave (SW) radar systems have demonstrated their capability to capture the signals from seismic and non-seismic tsunami events using the estimation of surface current changes. Several ocean radar systems, operating in the upper
Anna Dzvonkovskaya, Dejan Nikolic, Vladimir Orlic, Miroslav V. Peric, Nikola Tosic   +4 more
doaj   +1 more source

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, H. C. Carlson, V. A. Kornienko, T. D. Borisova, M. T. Rietveld, T. K. Yeoman, A. Brekke   +6 more
doaj   +1 more source

Stereo CUTLASS-a new capability for the SuperDARN HF radars [PDF]

, 2004
International audienceThe Super Dual Auroral Radar Network (SuperDARN), which consists of networks of HF radars surrounding the northern and southern poles, has proven to be an extremely successful experimental technique in a wide range of scientific ...
S. W. H. Cowley, Crooks, S. J., M. J. Parsons (7590314), Hamadyk, P., S. W. H. Cowley (7590302), Thornhill, J. D., P. J. Chapman, N. M. Wade (7590326), D. B. Payne (7590317), Chapman, P. J., J. A. Davies (4412452), E. C. Thomas, T. K. Yeoman, S. J. Crooks (7590305), Thomas, E. C., N. M. Wade, Yeoman, T. K., S. J. Crooks, D. B. Payne, R. J. Barnes, J. A. Davies, E. C. Thomas (7590320), Tim K. Yeoman (7583066), McWilliams, K. A., Barnes, R. J., Milan, S. E., K. A. McWilliams, R. J. Barnes (7590329), Lester, M., P. Hamadyk (7590308), M. J. Parsons, Steve E. Milan (7589666), Payne, D. B., Wade, N. M., M. Lester, M. Lester (7589660), P. J. Chapman (7590299), K. A. McWilliams (7590311), Davies, J. A., S. E. Milan, Cowley, S. W. H., J. D. Thornhill, J. D. Thornhill (7590323), Parsons, M. J., P. Hamadyk   +44 more
core   +2 more sources