Results 91 to 100 of about 1,515 (120)

Design and implementation of hardware architecture in ionospheric oblique backscattering sounding system

Wuhan University Journal of Natural Sciences, 2009
The ionospheric oblique backscattering sounding system can not only be used to detect the state of ionosphere and the condition of high frequency channel in real time, but also be used for over-the-horizon sounding. So, it has a very high military and civil value.
Shuzhu Shi, Zhengyu Zhao, Guobin Yang, Yuannong Zhang, Ruiyuan Liu   +4 more
openaire   +1 more source

Backscatter Sounding During Ionospheric Storms

1961
Abstract : The results of the ionospheric sounding by ground backscatter carried out at Torrechiaruccia (S. Marinella, Roma), during some severe ionospheric storms from August 1957 to February 1961, are briefly discussed. The advantages of the backscatter sounding to study the morphology of an ionospheric storm over a large area are put in evidence ...
P. Dominici, I. Ranzi
openaire   +1 more source

The research of backscatter ionosphere sounding features on the base of chirp ionosonde

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017
We present the results of researches for backscatter ionosphere sounding (BS) on the basis of multipurpose chirp ionosonde developed in ISTP SB RAS. Points of transmitter (52.8°N, 103.3°E) and receiver (51.8°N, 103Έ) are located near the city of Irkutsk.
S. N. Ponomarchuk, V. I. Kurkin, M. S. Penzin   +2 more
openaire   +1 more source

The correction of ionosphere parameters on the base of vertical and backscatter sounding data by continuous chirp signal

26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020
The methods for determining and correction of ionosphere parameters by real-time data of vertical and backscatter data sounding (VS and BS) by continuous chirp signal are presented. The input data are forecast ionosphere parameters and processing and interpretation results for VS and BS ionograms: VS height-frequency characteristic (HFC) and the ...
Sergey N. Ponomarchuk, Victor Grozov, Galina Kotovich, Vladimir Kurkin, Andrey Naumenko, Alexey Oinats, Alexey Podlesnyi   +6 more
openaire   +1 more source

Inversion of Ionospheric Sounding Data from an HF Backscatter Radar

1990
For radio waves in the high-frequency band (6–30 MHz), the ionospheric plasma is a refractive medium, with an index which depends on local electron density. HF backscatter radars can use this property to take soundings of the ionosphere by transmitting radio pulses at low elevation angles (see fig. 1).
N. Ruelle, F. Gauthier
openaire   +1 more source

A Novel Ionospheric Oblique-Incidence Sounding Network Consisting of the Ionospheric Oblique Backscatter Sounder and the Parasitic Oblique-Incidence Sounder

IEEE Geoscience and Remote Sensing Letters, 2015
In this letter, a novel ionospheric oblique-incidence sounding network consisting of the ionospheric oblique backscatter sounder and the parasitic oblique-incidence sounder is presented. With the new configuration, the oblique ionogram and the backscatter ionogram can be provided at the same time.
null Shu-zhu Shi, null Guo-bin Yang, null Zheng-yu Zhao, null Jing-nan Liu   +3 more
openaire   +1 more source

An algorithm for the removal of radio frequency interference in ionospheric backscatter sounding

Radio Science, 1991
In common with all wideband ionospheric sounding systems the backscatter technique is susceptible to contamination by radio frequency interference. The eradication of such interference is imperative in systems required to automatically interrogate the backscatter sounder data base.
openaire   +1 more source

Backscatter Ionospheric Sounding by a Continuous Chirp Signal

Izvestiya vysshikh uchebnykh zavedenii. Radiofizika, 2021
S.N. Ponomarchuk, V.P. Grozov, N.V. Ilyin, V.I. Kurkin, A.V. Oinats, M.S. Penzin, A.V. Podlesnyi, M.V. Tsedrik   +7 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Forecast of HF Radio Channel from Data of Ionospheric Backscatter Sounding

2024 IEEE 9th All-Russian Microwave Conference (RMC)
Sergey Ponomarchuk, Victor Grozov
openaire   +1 more source