Results 1 to 10 of about 12,139 (116)

Application of Beamforming Technology in Ionospheric Oblique Backscatter Sounding with a Miniaturized L-Array [PDF]

open access: yesRemote Sensing, 2020
In this paper, a new dedicated multi-channel ionospheric oblique backscatter sounder is described. A miniaturized L-shaped antenna array was employed for the receiving of the oblique backscatter echoes in the present system. Firstly, two typical adaptive
Tongxin Liu   +4 more
doaj   +3 more sources

Features of backscatter ionospheric sounding as studied with a chirp ionosonde

open access: yesSolar-Terrestrial Physics, 2017
We present the results of the studies of backscatter ionospheric sounding (BS) on the basis of a multipurpose chirp ionosonde developed in ISTP SB RAS. We analyze BS experimental data obtained during different seasons from 2005 to 2009.
Ponomarchuk S.N.   +2 more
doaj   +5 more sources

Diagnostics of HF radio channel: based on data from backscatter ionospheric sounding by continuous chirp signal

open access: yesSolar-Terrestrial Physics, 2018
Backscatter ionospheric sounding (BIS) is a powerful tool for monitoring and predicting conditions of operation of HF communication systems. The BIS method is adopted to determine coverage areas of radio waves and maximum usable radio frequencies ...
Ponomarchuk S.N.   +4 more
doaj   +4 more sources

A Frequency Selecting Method for High-Frequency Communication Based on Ionospheric Oblique Backscatter Sounding

open access: yesRemote Sensing
Ionospheric oblique backscatter sounding is an effective means of monitoring the ionosphere which can be used as a frequency selection system to serve HF communication and ensure its quality and stability. But how to obtain effective information from the
Chuqi Cai   +3 more
doaj   +3 more sources

E-Region Field-Aligned Irregularities in the Middle of a Solar Eclipse Observed by a Bistatic Radar [PDF]

open access: yesRemote Sensing, 2022
The Wuhan Ionospheric Oblique Backscatter Sounding System (WIOBSS) was applied as a bistatic radar to record the ionospheric E-region responses to a solar eclipse on 22 July 2009.
Lei Qiao   +8 more
doaj   +4 more sources

An Integrated Technology of Ionospheric Backscatter Detection and Oblique Detection

open access: yesIEEE Access, 2021
Traditional single ground-based ionospheric detection methods often fail to obtain accurately ionospheric parameter information due to the measurement errors of detection systems and inverse algorithms.
Peng Lou, Lixin Guo, Jing Feng, Na Wei
doaj   +2 more sources

Wuhan Ionospheric Oblique Backscattering Sounding System and Its Applications-A Review. [PDF]

open access: yesSensors (Basel), 2017
For decades, high-frequency (HF) radar has played an important role in sensing the Earth’s environment. Advances in radar technology are providing opportunities to significantly improve the performance of HF radar, and to introduce more applications. This paper presents a low-power, small-size, and multifunctional HF radar developed by the Ionospheric ...
Shi S, Yang G, Jiang C, Zhang Y, Zhao Z.
europepmc   +4 more sources

INVERSION OF BACKSCATTER IONOGRAMS INTO QUASI-PARABOLIC IONOSPHERIC LAYER PARAMETERS

open access: yesSolar-Terrestrial Physics, 2020
We present an inversion scheme of the backscatter signal leading edge into parameters of the quasi-parabolic electron density profile, which is based on the comparison of experimental and calculated minimum delays of scattered signals with corresponding ...
S.N. Ponomarchuk, M.S. Penzin
doaj   +2 more sources

Design and Application of Wuhan Ionospheric Oblique Backscattering Sounding System with the Addition of an Antenna Array (WIOBSS-AA). [PDF]

open access: yesSensors (Basel), 2016
The Wuhan Ionospheric Oblique Backscattering Sounding System with the addition of an antenna array (WIOBSS-AA) is the newest member of the WIOBSS family. It is a multi-channel radio system using phased-array antenna technology. The transmitting part of this radio system applies an array composed of five log-periodic antennas to form five beams that ...
Cui X, Chen G, Wang J, Song H, Gong W.
europepmc   +4 more sources

Evidence of low‐latitude daytime large‐scale traveling ionospheric disturbances observed by high‐frequency multistatic backscatter sounding system during a geomagnetically quiet period [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2012
Observations from the high‐frequency multistatic backscatter sounding radars on a geomagnetically quiet day (minimum Dst = −14 nT) captured the anti‐equatorward propagation of daytime large‐scale traveling ionospheric disturbance (LSTID) at the low‐latitude regions. The observed LSTID was characterized approximately by a meridional propagation speed of
Chen Zhou   +5 more
openaire   +2 more sources

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