Results 31 to 40 of about 5,388 (217)

Validation of International Reference Ionosphere model (IRI-2016) for F-region peak electron density height (hmF2): Comparison with Incoherent Scatter Radar (ISR) and ionosonde measurements at Millstone Hill

, 2020
In this report, we have evaluated the performance of International Reference Ionosphere (IRI-2016) model in predicting the diurnal variation of F-region peak electron density height (hmF2) at Millstone Hill (MH, 42.6°N, 288.5°E) during the solar cycle 24
C. K. Mengist, S. Yadav, K. Kotulak, A. Bahar, S.‐R. Zhang, K. Seo   +5 more
semanticscholar   +1 more source

Ionospheric Density Irregularities, Turbulence, and Wave Disturbances During the Total Solar Eclipse Over North America on 21 August 2017

Geophysical Research Letters, 2018
Data from ionosonde and global positioning system (GPS) total electron content (TEC) observations reveal a number of ionospheric phenomena during the total solar eclipse on 21 August 2017 over North America. The eclipse started over the West Coast at ∼16:
Rezy Pradipta, Endawoke Yizengaw, Patricia Doherty   +2 more
doaj   +1 more source

New low power pulse compressed ionosonde at Gibilmanna Ionospheric Observatory

Annals of Geophysics, 2005
A digital low power pulse compressed ionosonde was developed at the Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy. The aim of this Advanced Ionospheric Sounder, AIS-INGV, is to reduce the transmitted power and, consequently,
G. Tutone, C. Scotto, U. Sciacca, V. Romano, M. Pezzopane, C. Bianchi, J. A. Baskaradas, E. Zuccheretti   +7 more
doaj   +1 more source

Improving the Topside Profile of Ionosonde with TEC Retrieved from Spaceborne Polarimetric SAR. [PDF]

Sensors (Basel), 2019
Signals from spaceborne polarimetric synthetic aperture radar will suffer from Faraday rotations when they propagate through the ionosphere, especially those at L-band or lower frequencies, such as signals from the Phased Array type L-band Synthetic ...
Wang C, Guo W, Zhao H, Chen L, Wei Y, Zhang Y.   +5 more
europepmc   +2 more sources

AMPLITUDE VARIATIONS OF THE REFLECTED SIGNAL DURING VERTICAL SOUNDING OF THE IONOSPHERE AT MIDDLE LATITUDES

Solar-Terrestrial Physics, 2020
In this paper, we discuss the main types of quasiperiodic variations in amplitudes of a reflected signal during vertical sounding of the ionosphere at middle latitudes.
K.М. Yusupov, J.D. Mathews, T. Maruyama, A.D. Akchurin, M.V. Tolstikov, O.N. Sherstyukov, E.A. Filippova, A.S. Safiullin   +7 more
doaj   +1 more source

Chaotic Coding for Interference Suppression of Digital Ionosonde

Remote Sensing, 2023
External interference in ionospheric sounding seriously degrades the quality of echo signals and data; thus, it should be eliminated. This paper presents a method for suppressing interference using chaotic coding with a set of Bernoulli map sequences; compared with other commonly used coding methods such as Barker code, complementary code, and Barker ...
Sijia Han, Wei Guo, Peng Liu, Te Wang, Caiyun Wang, Qingyu Fang, Jian Yang, Lingling Li, Dapeng Liu, Jianping Huang   +9 more
openaire   +2 more sources

Ionosonde total electron content evaluation using International Global Navigation Satellite System Service data

Annals of Geophysics, 2020
. In this work, a period of 2 years (2016–2017) of ionospheric total electron content (ITEC) from ionosondes operating in Brazil is compared to the International GNSS (Global Navigation Satellite System) Service (IGS) vertical total electron content ...
T. Klipp, Adriano Petry, Jonas R. de Souza, E. D. de Paula, Gabriel Sandim Falcão, H. F. de Campos Velho   +5 more
semanticscholar   +1 more source

A method for real-time identification and tracking of traveling ionospheric disturbances using ionosonde data: first results

, 2020
Traveling Ionospheric Disturbances (TIDs) are wave-like propagating irregularities that alter the electron density environment and play an important role spreading radio signals propagating through the ionosphere. A method combining spectral analysis and
D. Altadill, A. Segarra, E. Blanch, J. Juan, V. Paznukhov, D. Burešová, I. Galkin, B. Reinisch, A. Belehaki   +8 more
semanticscholar   +1 more source

Ionosphere over Ukrainian Antarctic Akademik Vernadsky station under minima of solar and magnetic activities, and daily insolation: case study for June 2019

Український антарктичний журнал, 2020
We present ionospheric observational results obtained over Ukrainian Antarctic Akademik Vernadsky station. Ionospheric parameters (peak electron density and height, electron density and electron and ion temperatures in the topside) during the period near
O. V. Bogomaz, M. O. Shulha, D. V. Kotov, T. G. Zhivolup, A. V. Koloskov, A. V. Zalizovski, S. B. Kashcheyev, A. I. Reznychenko, M. R. Hairston, V. Truhlik   +9 more
doaj   +1 more source

Vertical and Oblique Ionosphere Sounding During the 21 August 2017 Solar Eclipse

Geophysical Research Letters, 2018
On 21 August 2017, a total solar eclipse crossed North America. Two Vertical Incident Pulsed Ionospheric Radar ionosondes were operated, one deployed under totality at Lusk, Wyoming, and another south of totality, 313 km away from the geomagnetic ...
Terence Bullett, Justin Mabie
doaj   +1 more source