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Scintillations and the Latitude Distribution of Ionospheric Irregularities
Nature, 1961KENT1 has reported a series of observations on the 40 Mc./s. transmissions from Sputnik 1 made at Cambridge during October 1957. He found that the transmissions always underwent rapid fading (scintillation) when the satellite was north of Cambridge but only occasionally when south of Cambridge.
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Ionospheric scintillation observations at Natal
Journal of Geophysical Research: Space Physics, 1981We report ionospheric scintillation observations made at Natal, Brazil, during a period of 2½ years. The nighttime scintillations of satellite signals at 250 MHz commonly exceeded 20 dB peak‐to‐peak. Seasonally, it showed a typical behavior for the South American sector with a single peak centered around October–November months and the local evening ...
K. C. Yeh +4 more
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Algorithm of Ionospheric Scintillation Monitoring
2018 7th International Conference on Digital Home (ICDH), 2018With the development of the Beidou satellite navigation system, the monitoring of ionospheric scintillation combined with GPS and Beidou system has become a trend. In this paper, the design and implementation of the upper computer software for ionospheric scintillation monitoring are introduced, and the related algorithms such as ionospheric amplitude ...
Xiyan Sun +5 more
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Ionospheric irregularities and radio scintillations
Contemporary Physics, 1975(1975). Ionospheric irregularities and radio scintillations. Contemporary Physics: Vol. 16, No. 5, pp. 469-488.
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Superposition Property of the Ionospheric Scintillation S4 Index
IEEE Geoscience and Remote Sensing Letters, 2020S4 index is the rapid modification of signals when propagating through small-scale structures in the ionosphere, called ionospheric irregularities. The rapid modification of the signal causes the scintillation of the power. The purpose of this letter is to confirm the superposition property of the S4 index by using the ray-tracing method to simulate ...
Wen-Hao Yeh +5 more
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Ionospheric Scintillations: Indices and Modeling
Radio Science, 2019AbstractThis paper presents a review of the ionosphere scintillation characteristics recorded at low and high latitudes. The European Space Agency (ESA) MONITOR database has been used to support the analysis. We review in particular the different indices and the values recorded by the different kinds of receivers deployed during the measurement ...
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Effect of Anisotropy on Ionospheric Scintillations Observed by SAR
IEEE Transactions on Geoscience and Remote Sensing, 2019Studies pertaining to small scale structures producing scintillations using synthetic aperture radars (SARs) have predominantly been conducted at low-latitude regions. The high-latitude region (auroral belt and polar caps) is highly dynamic and varies in response to stimuli from solar winds and the magnetosphere in complex ways.
Shradha Mohanty +2 more
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Scintillation Simulator Test Results: Hardware-in-the-Loop Emulation of Ionospheric Scintillation
2014 IEEE Military Communications Conference, 2014Ionospheric scintillation induces distortion onto RF communication and radar signals that propagate through the ionospheric medium. Unless properly accounted for, this scintillation may greatly impact the performance of military and commercial satellite signals.
William S. Sward +2 more
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Power spectra of ionospheric scintillations
Journal of Atmospheric and Terrestrial Physics, 1974Abstract The diffraction theory of interplanetary scintillations, which allows a connection to be established between the spatial spectrum of electron-density fluctuations in the irregular medium and the power spectrum of intensity scintillations observed on the ground, is reviewed and applied to the case of the ionosphere.
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Modeling and prediction of ionospheric scintillation
12th Aerospace Sciences Meeting, 1974Scintillation modeling performed thus far is based on the theory of diffraction by a weakly modulating phase screen developed by Briggs and Parkin (1963). Shortcomings of the existing empirical model for the scintillation index are discussed together with questions of channel modeling, giving attention to the needs of the communication engineers.
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