Ionosphere

View this topic in
The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. (Wikipedia.org)






Conferences related to Ionosphere

Back to Top

2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2019 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

International Geosicence and Remote Sensing Symposium (IGARSS) is the annual conference sponsored by the IEEE Geoscience and Remote Sensing Society (IEEE GRSS), which is also the flagship event of the society. The topics of IGARSS cover a wide variety of the research on the theory, techniques, and applications of remote sensing in geoscience, which includes: the fundamentals of the interactions electromagnetic waves with environment and target to be observed; the techniques and implementation of remote sensing for imaging and sounding; the analysis, processing and information technology of remote sensing data; the applications of remote sensing in different aspects of earth science; the missions and projects of earth observation satellites and airborne and ground based campaigns. The theme of IGARSS 2019 is “Enviroment and Disasters”, and some emphases will be given on related special topics.


2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting

The conference is intended to provide an international forum for the exchange of information on state-of-the-art research in antennas, propagation, electromagnetics, and radio science.


2018 14th IEEE International Conference on Signal Processing (ICSP)

ICSP2018 includes sessions on all aspects of theory, design and applications of signal processing. Prospective authors are invited to propose papers in any of the following areas, but not limited to: A. Digital Signal Processing (DSP)B. Spectrum Estimation & ModelingC. TF Spectrum Analysis & WaveletD. Higher Order Spectral AnalysisE. Adaptive Filtering &SPF. Array Signal ProcessingG. Hardware Implementation for Signal ProcessingH Speech and Audio CodingI. Speech Synthesis & RecognitionJ. Image Processing & UnderstandingK. PDE for Image ProcessingL.Video compression &StreamingM. Computer Vision & VRN. Multimedia & Human-computer InteractionO. Statistic Learning & Pattern RecognitionP. AI & Neural NetworksQ. Communication Signal processingR. SP for Internet and Wireless CommunicationsS. Biometrics & AuthentificationT. SP for Bio-medical & Cognitive ScienceU


2018 European Conference on Antennas and Propagation (EuCAP)

Antennas & related topics e.g. theoretical methods, systems, wideband, multiband, UWBPropagation & related topics e.g. modelling/simulation, HF, body-area, urbanAntenna & RCS measurement techniques


More Conferences

Periodicals related to Ionosphere

Back to Top

Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Broadcasting, IEEE Transactions on

Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.


Communications Magazine, IEEE

IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...


More Periodicals

Most published Xplore authors for Ionosphere

Back to Top

Xplore Articles related to Ionosphere

Back to Top

Remote sensing of nighttime F region peak height and peak density using ultraviolet line ratios

Radio Science, 2009

We present a newly developed algorithm for simultaneously inferring the peak height and peak density of the O+ions in the nighttime ionosphere. The technique relies on the simultaneous observation of the emissions of atomic oxygen at 130.4 and 135.6 nm that are primarily produced by radiative recombination, a natural decay process of the ionosphere. The 135.6 nm emission has become ...


The Ionosphere

Electrical Engineering, 1940

SOME YEARS AGO there was a flood of books bearing such titles as “The Doctor Looks at Love”, “The Lawyer Looks at the Law”, “The Poet Looks at Civilization”, etc., etc. I might have followed their precedent by naming this lecture “The Physicist Looks at the Ionosphere”. Better would have been to say “The Physicist Listens to the Ionosphere” for ...


Strong scintillation of GNSS signals in the inhomogeneous ionosphere: 2. Simulator of transionospheric channel

Radio Science, 2015

The physics-based software simulator of the Global Navigation Satellite System signals on the transionospheric paths of propagation is presented, which provides the possibility for generating the field amplitude and phase random time series in the conditions of strong scintillations, including the case when it is formed inside the inhomogeneous ionospheric layer, which is the result of multiple scattering by the ...


An ionospheric obliquity process responsive to line-of-sight azimuth and elevation

Radio Science, 2002

This paper describes a one-directional iterative technique which converts from slant Total Electron Content (TEC) to vertical TEC using information describing the current state of the ionosphere. The method combines the well- known Chapman function of electron density with a spherical harmonics representation of the peak density over a spherical surface. Several parameters either have restricted movement or are kept ...


Latitude variation in VLF modal interference

Radio Science, 1968

Sunrise modal interference patterns are analyzed to reveal the variation with latitude of VLF propagation parameters. For VLF transmissions from NLK/NPG and WWVL received in New Zealand, the sunrise interference observations confirm Lynn's result that anomalies in the phase and magnitude of mode conversion occur when the sunrise line is near the geomagnetic equator. A smaller anomalous effect is observed ...


More Xplore Articles

Educational Resources on Ionosphere

Back to Top

IEEE.tv Videos

No IEEE.tv Videos are currently tagged "Ionosphere"

IEEE-USA E-Books

  • Remote sensing of nighttime F region peak height and peak density using ultraviolet line ratios

    We present a newly developed algorithm for simultaneously inferring the peak height and peak density of the O+ions in the nighttime ionosphere. The technique relies on the simultaneous observation of the emissions of atomic oxygen at 130.4 and 135.6 nm that are primarily produced by radiative recombination, a natural decay process of the ionosphere. The 135.6 nm emission has become the workhorse for sensing O+distribution from space from low-Earth platforms where it has been used to infer the peak electron density. A previous study showed that the line ratio of the intensity of the 130.4/135.6 nm radiances is sensitive to the peak height of the ionosphere, as the ratio of the two radiances is dependent on the overlap of the O+distribution with the thermospheric O layer. We present a new parametric study of these emissions using a new algorithm that permits the retrieval of the peak electron density and the peak height of the F region ionosphere from the measured radiances of the 135.6 and 130.4 nm emissions. We examine the sensitivity of the retrievals to the ionospheric and thermospheric state and to the signal-to-noise ratio of the observations. This new technique enables the determination of the peak height and peak density of the nighttime F region ionosphere as functions of latitude and longitude from nadir-viewing geostationary satellites.

  • The Ionosphere

    SOME YEARS AGO there was a flood of books bearing such titles as “The Doctor Looks at Love”, “The Lawyer Looks at the Law”, “The Poet Looks at Civilization”, etc., etc. I might have followed their precedent by naming this lecture “The Physicist Looks at the Ionosphere”. Better would have been to say “The Physicist Listens to the Ionosphere” for while the actual procedure is neither listening nor looking in the usual senses, it is rather more like listening. As a matter of fact we have all of us listened to the ionosphere — all of us excepting those who as yet have never hearkened to a broadcast from long distance, and who must by now be few. Any program which is heard from more than a few hundred miles, and does not come by wire, comes by courtesy of the ionosphere. When we are lending ear to such a program, we are listening both to the loud-speaker and to the ionosphere, since both take part in the transmission. Of course we are likely to be listening also to the news; but nowadays the news is generally dismal or frightful or both; and it should be happiness to be diverted for a while from what the ionosphere brings to the qualities of this innocent agent itself, which is not in the least to blame for the evil which it reflects.

  • Strong scintillation of GNSS signals in the inhomogeneous ionosphere: 2. Simulator of transionospheric channel

    The physics-based software simulator of the Global Navigation Satellite System signals on the transionospheric paths of propagation is presented, which provides the possibility for generating the field amplitude and phase random time series in the conditions of strong scintillations, including the case when it is formed inside the inhomogeneous ionospheric layer, which is the result of multiple scattering by the local random inhomogeneities of the electron density embedded in the inhomogeneous extended medium.

  • An ionospheric obliquity process responsive to line-of-sight azimuth and elevation

    This paper describes a one-directional iterative technique which converts from slant Total Electron Content (TEC) to vertical TEC using information describing the current state of the ionosphere. The method combines the well- known Chapman function of electron density with a spherical harmonics representation of the peak density over a spherical surface. Several parameters either have restricted movement or are kept constant in order for the problem to remain manageable. This technique is compared to the standard thin shell model obliquity factor in order to assess the degree of improvement in accuracy and the conditions under which this occurs. The Parameterized Ionospheric Model (PIM) is used as a truth model.

  • Latitude variation in VLF modal interference

    Sunrise modal interference patterns are analyzed to reveal the variation with latitude of VLF propagation parameters. For VLF transmissions from NLK/NPG and WWVL received in New Zealand, the sunrise interference observations confirm Lynn's result that anomalies in the phase and magnitude of mode conversion occur when the sunrise line is near the geomagnetic equator. A smaller anomalous effect is observed during sunset. Analyzing data for many paths in the frequency range 18–20 kHz, it is found that D (the interference wavelength of the first and second modes in the nighttime waveguide) differs little from the theoretically expected value (about 2 Mm) between geomagnetic latitudes 30° and 60°. At smaller geomagnetic latitudes, however, values of D up to 3 Mm are observed for westward propagation. This large increase in D explains anomalous observations of nighttime amplitude.

  • Modeling of ionospheric perturbation by 2004 Sumatra tsunami

    A complete model is proposed to analyze the electron density perturbation caused by tsunami-induced gravity waves. Loss mechanisms of thermal conduction, viscosity, and ion drag are considered in deriving the dispersion relation of the atmospheric gravity waves (AGWs). This model is then used to analyze the electron density perturbation in the ionosphere caused by the Sumatra tsunami on 26 December 2004. It is found that the AGWs move horizontally at the same speed with that of the tsunami and are trapped at about 400 km high. The simulation results well explain that about 13 min after the tsunami triggers AGWs, electron density perturbation in the ionosphere can be detected by satellites that pass over.

  • Scintillation caused by the ionosphere with non-Gaussian statistics of irregularities

    In situ measurements indicate that the probability distribution function (pdf) of plasma density fluctuations on scales of importance to scintillation is far from the Gaussian and resemble the Laplace (double exponential) distribution. Radio wave propagation in the ionosphere with irregularities subject to the Gaussian and Laplace pdf has been modeled using the multiple two-dimensional phase screen method. The Chapman altitude profile of plasma density is assumed. Modeling shows considerable differences between the scintillation intensity with more intense, intermittent scintillation associated with the non-Gaussian irregular ionosphere. We also have found that the probability distribution function of the medium fluctuations has no effect on the phase scintillation. We show that the mean delay time is much more irregular for the Laplace statistics and may be much larger than that for the Gaussian distribution. Similarly the pulse spread is larger in the non-Gaussian case, often suddenly increasing by several tens of percent compared to the undisturbed propagation.

  • Ionosphere geomagnetic field: Comparison of IGRF model prediction and satellite measurements 1991–2010

    The geomagnetic field is an important parameter in space physics. The International Geomagnetic Reference Field (IGRF) is a model of the Earth's main field. Current sources in the ionosphere, the interplanetary magnetic field, annual and diurnal variation, and other sporadic and unmodeled effects may alter the actual B field distribution. We investigate whether the model is nevertheless sufficiently accurate for computing ionospheric effects on radio frequency signals. Detailed analysis of scalar intensity is presented based on direct measurements of the magnetic field taken from UARS, SAC-C, Ørsted, and CHAMP, all satellites with magnetometers orbiting between 200 and 1000 km altitude. Our results indicate that the IGRF model is within 1% accuracy of the measured ionosphere B field, 92.80% of the time. Quality control issues associated with the scalar data are also discussed.

  • Thermal self-focusing instability in the high-latitude ionosphere

    A model for the linear theory of the overdense thermal self-focusing instability, as generated by high power radio waves, in the high-latitude F-region ionosphere is developed. We treat self-focusing-driven irregularities with scale sizes, perpendicular to the geomagnetic field, on the order of a kilometer and smaller. We find that E-region coupling leads to nonambipolar perpendicular diffusive effects. The conducting E-region is shown to increase the threshold for the thermal self-focusing instability. Growth rates of the thermal self-focusing instability are computed, including E-region conductivity effects, for a range of radio wave amplitudes.

  • IEE Colloquium on 'High Latitude Ionospheric Propagation' (Digest No.100)

    None



Standards related to Ionosphere

Back to Top

No standards are currently tagged "Ionosphere"


Jobs related to Ionosphere

Back to Top