Results 101 to 110 of about 723 (151)
Polar Science, 2022 In this study, ion drift velocities measured by Digisonde instruments over Zhongshan Station (ZHS, geog. 69.38°S, 76.38°E), Antarctica, are compared with measurements from Super Dual Auroral Radar Network (SuperDARN) HF radars.
Beichen Zhang +2 more
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Digisonde Spread F and GPS Phase Fluctuations in the Equatorial Ionosphere During Solar Maximum
Journal of Geophysical Research: Space Physics, 2006 The Jicamarca (11.95°S, 76.87°W) digisonde and the Arequipa (16.47°S, 71.49°W) GPS receiver observed the equatorial F region irregularities on the western South America from April 1999 to March 2000. The spread F measured by the digisonde were classified
Bodo W Reinisch
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Advances in Space Research, 2009 To improve the accuracy of the real time topside electron density profiles given by the Digisonde software a new model-assisted technique is used. This technique uses the Topside Sounder Model (TSM), which provides the plasma scale height (Hs), O+–H ...
Bodo W Reinisch +2 more
exaly +1 more source
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Comparison Between RO and Digisonde Topside Plasma Frequency Over European Digisonde Stations
Ninth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2023), 2023Haris Haralambous
exaly +2 more sources
New Digisonde for Research and Monitoring Applications
Radio Science, 2009The new Digisonde‐4D, while preserving the basic principles of the Digisonde family, introduces important hardware and software changes that implement the latest capabilities of new digital radio frequency (RF) circuitry and embedded computers. The “D” refers to digital transmitters and receivers in which no analog circuitry is used for conversion ...
Bodo W Reinisch, Ivan Andreevich Galkin
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Digisonde Drift Analysis Software
AIP Conference Proceedings, 2008This paper introduces a newly developed conceptual Java-based software package for the digisonde drift data analysis and visualization. This package replaced the less versatile Fortran-based applications previously developed at UMLCAR. A dedicated database intended for raw and processed drift data storage, access, and exchange has also been established
Alexander V. Kozlov +5 more
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Precise Radar Range Measurements with Digisondes
AIP Conference Proceedings, 2008A digisonde phase-difference technique measures precise radar ranges of echoes reflected from the ionosphere. The technique, which analyzes the phase differences between signals at slightly different frequencies, allows measuring the reflection range, i.e., the virtual height h′(f) for vertical sounding, with accuracies of better than one kilometer ...
Bodo W. Reinisch +8 more
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First results from the Cyprus digisonde
IET 11th International Conference on Ionospheric Radio Systems and Techniques (IRST 2009), 2009A new ionospheric station was recently established in Nicosia (Cyprus) to initiate ionospheric research on the island. The deployment of a DPS-4D (digisonde) developed at the University of Massachusetts Lowell's Center for Atmospheric Research (UMLCAR), is considered very beneficial to the ionospheric scientific community, taking into account the lack ...
H. Haralambous +2 more
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A topside investigation over a mid-latitude digisonde station in Cyprus
Advances in Space Research, 2021Abstract We examine the systematic differences between topside electron density measurements recorded by different techniques over the low-middle latitude operating European station in Nicosia, Cyprus (geographical coordinates: 35.14oN, 33.2oE), (magnetic coordinates 31.86oN, 111.83 oE).
Arun Kumar Singh +3 more
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Analysis of digisonde drift measurements quality
Journal of Atmospheric and Solar-Terrestrial Physics, 2012Ionosondes underwent significant improvements since their invention in 1924 (Breit and Tuve, 1926). At the beginning, ionospheric sounders measured only vertical profile of electron concentration. Contemporary modern digital ionosondes usually provide ionospheric drift measurement as a part of the routine monitoring in addition to the classical ...
Daniel Kouba, Petra Koucká Knížová
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