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2019
The Earth’s ionosphere ranges from about 60 to 1000 km in the atmosphere (Li and Huang 2005). Different from other Earth’s spheres, the ionosphere contains a large number of ions and free electrons under the Sun radiation and cosmic ray excitation effect.
Shuanggen Jin, R. Jin, X. Liu
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The Earth’s ionosphere ranges from about 60 to 1000 km in the atmosphere (Li and Huang 2005). Different from other Earth’s spheres, the ionosphere contains a large number of ions and free electrons under the Sun radiation and cosmic ray excitation effect.
Shuanggen Jin, R. Jin, X. Liu
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Radio-acoustic sounding of the ionosphere
Radiophysics and Quantum Electronics, 2009We present the results of first experiments on radio-acoustic sounding of ionosphere at the altitudes from 70 to 85 km. The sounding was performed in autumn 2006, using a horn acoustic emitter and a radar on the basis of the “Sura” facility. The emitter had an acoustic power of about 1 kW and operated in the chirp-modulation regime with frequency ...
V. A. Zinichev +5 more
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The propagation of sound in the ionosphere
Journal of Sound and Vibration, 1972Abstract The propagation of a pressure-step discontinuity in an attenuating and dispersive medium is analyzed in the acoustic approximation. An exact solution is obtained, valid for all times and all distances. Approximate solutions for very short times and asymptotically large times are also presented.
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Ionospheric studies and sounding at the CRIRP
IEEE Antennas and Propagation Magazine, 1996The studies and research which have been carried out for ionospheric sounding at the CRIRP (China Research Institute of Radiowave Propagation) are briefly described. Also described are major results, including the setup and programs of the observation network. Finally, the future, developing plans of the CRIRP are described.
null Ma Tiehan, null Jiao Peinan
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Topside sounding of the earth's ionosphere
Space Science Reviews, 1968The evolution of topside sounding through rocket and satellite experiments is reviewed. Topside sounding has proved valuable for revealing the structure of the high ionosphere and for investigating the resonance properties of a magnetoplasma. The limits of our present knowledge of these rapidly developing subjects are discussed.
J.H. Chapman, E.S. Warren
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Oblique-Incidence Ionospheric Radio-Sounding: Seismo-Ionospheric Effects
2020 IEEE Ukrainian Microwave Week (UkrMW), 2020The observation of disturbances in the ionosphere during moderate (M ≈ 5.9 – 6.6) earthquakes of July 7, 2018, September 5 2018, and April 11, 2019 in Japan are described. Analysis of the signal amplitude, of the Doppler spectra variations, and of the Doppler shift of frequency in the signals traveling along the main ray path on the reference days and ...
Leonid F. Chernogor +5 more
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Vertical Ionospheric Sounding Measurements
1964This report presents data on the ionospheric perturbations resulting from the five 1962 high-altitude nuclear detonations, Star Fish, Check Mate, Blue Gill, King Fish, and Tight Rope, as obtained with sweep-frequency vertical-incidence ionosondes operated at the Islands of Maui, Tern (French Frigate Shoals), Midway, Wake (Star Fish only), Canton ...
T. N. Gautier, W. F. Utlaut
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Radio soundings of the ionosphere
1990Most of our knowledge of the ionosphere comes from remote sensing by radio waves. Single-frequency techniques for remotely measuring time of flight, amplitude, phase, polarization, and angles of arrival include reflection by refractive bending and by so-called coherent and incoherent scatter.
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Ground GNSS Ionosphere Sounding
2013Ionospheric delay will bring errors for GNSS navigation and positioning when the electromagnetic wave signal goes through the earth’s ionosphere from satellites to receivers. The amount of ionospheric delay of GNSS varies from a few meters to decades of meters, but could reach more than decades of meters during severe ionosphere storms.
Shuanggen Jin +2 more
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Incoherent scatter sounding of the ionosphere
Contemporary Physics, 1974Abstract The incoherent scatter technique for sounding the ionosphere, fist introduced in 1968, is now recognized as being the most accurate and convenient means of measuring a number of basic physical parameters of the ionosphere. Theory indicates that the technique can provide direct data on electron density, electron temperature, ion temperature ...
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