Propagation effects on military systems in the high latitude region

papers presented at the 36th symposium of the Electromagnetic Wave Propagation Panel held in Fairbanks, Alaska, USA, 3-7 June 1985
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by
Agard , Neuilly sur Seine
Statementedited by H. Soicher.
SeriesConference proceedings / Agard -- no.382
ContributionsSoicher, H.
ID Numbers
Open LibraryOL14225182M

Topics discussed include: experimental studies of ionospheric irregularities and regular structure, results of ionospheric modification (HF heating) experiments,theoretical studies of ionospheric irregularity formation, global survey of ground conductivities,disturbance modeling studies, high latitude effects on HF radio communicaton, transionospheric communications, satellite synthetic aperture radar (SAR), MF radio broadcasting, spatially adaptive propagation, HF digital, Skywave HF sea.

In AGARD Propagation Effects on Military Systems in the High Latitude Region 7 p (SEE N ) Publication Date: 11/ Category: Communications and Radar: Origin: STI: NASA/STI Keywords: Antenna Arrays, High Frequencies, Ionospheric Propagation, Phased Arrays, Azimuth, Canada, Computation, Elevation Angle, Greenland, Latitude.

This book presents a modern treatment of the physics and phenomena of the high latitude upper atmosphere and the morphology of radio propagation in the auroral and polar regions.

Chapters cover the basics of radio propagation and the use of radio techniques in ionospheric studies.5/5(1). In AGARD Propagation Effects on Military Systems in the High Latitude Region 14 p (SEE N ) Publication Date: 11/ Category: Communications and Radar: Origin: STI: NASA/STI Keywords: Earth Ionosphere, Ionospheric Propagation, Latitude, Radar, Auroras, Backscattering, Ionization, Night, Tables (Data) Bibliographic Code: pems.

Media effects on electronic systems in the high latitude region: Lecture Series under the sponsorship of the Electromagnetic Wave Propagation Panel of AGARD and the Consultant and Exchange Programme of AGARD presented on September in Ottawa, Canada, on October in Geilo, Norway and on October in London, United Kingdom.

The high-latitude ionosphere and its effects on radio propagation The physical properties of the ionized layer in the Earth’s upper atmosphere enable us to use it to support an increasing range of communications applications.

This book presents a modern treatment of the physics and phenomena of the. The influence of high latitude off-great circle propagation effects on HF communication systems and radiolocation May Acta Geodaetica et Geophysica Hungarica 37().

In AGARD Propagation Effects on Military Systems in the High Latitude Region 17 p (SEE N An Improved Model of High-Latitude F-Region Scintillation (WBMOD Version 13) Many modern military systems used for communications, command and control, navigation, and surveillance depend on.

Propagation effects on military systems in the high latitude region book The High-Latitude Ionosphere and its Effects on Radio Propagation is a bit of a misnomer, because the book covers many more topics than its title suggests. atmosphere-ionosphere system.

Basic Author: Ronald Moses. Propagation effects on military system in the high latitude region: Papers presented at the 36th Symposium of the Electromagnetic Wave Propagation Panel held in Fairbanks, Alaska, USA, June, [North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development.

Electromagnetic Wave Propagation Panel. Symposium]. In AGARD Propagation Effects on Military Systems in the High Latitude Region 12 p (SEE N   In AGARD Propagation Effects on Military Systems in the High Latitude Region 10 p (SEE N Author: H.

Volland, M. Schmolders, G. Proelss, H. Kroeninger. Observations with an ionosonde in Northern Germany near the mid-latitude trough: Authors: Damboldt, T. Affiliation: AA(Forschungsinstitut der Deutschen Bundespost, Darmstadt (Germany, F.R.).) Publication: In AGARD Propagation Effects on Military Systems in the High Latitude Region 5 p (SEE N ) Publication Date: 11/ Category.

Paul is a leading figure in radio science and systems, being interested in a wide range of radio propagation, radio environment and space science problems and how they impact communications, radar and navigation systems.

He has made numerous personal and team leadership contributions to mitigating the impact of the environment on radio systems. a meeting on propagation effects on military systems in the high latitude region is to bring together these two areas.

The behavior of the propagation environment at high latitudes differs from that at lower latitudes. In AGARD Propagation Effects on Military Systems in the High Latitude Region 14 p (SEE N ) Publication Date: 11/ Category: Communications and Radar: Origin: STI: NASA/STI Keywords: Alaska, Radio Frequency Interference, Radio Transmission, Solar Activity Effects, Wave Propagation, Annual Variations, Antennas, Seasons, Sunspots.

In AGARD Propagation Effects on Military Systems in the High Latitude Region 18 p (SEE N ) with respect to conventional high frequency communication, when used at high latitudes.

Description Propagation effects on military systems in the high latitude region FB2

A recently deployed high latitude MBC propagation experiment, between Bodo in Norway and Wick in Scotland (UK) is described and some of the early data. Observations of the signal received from an EHF satellite beacon were made during June, August and December from a location in the Canadian arctic north of 80 deg N.

The satellite follows an inclined orbit and as a result is visible for about eleven hours per day. During this period the elevation angle to the satellite varies between zero and approximately Author: I. Lam, J. Strickland. Characteristics of high latitude meteor scatter propagation parameters over the MHz band, paper presented at Propagation effects on military sytems in the high latitude region, ().

Characteristics of radio echoes from meteor trailsiIII The behaviour of Author: A. Shukla. Space Weather Effects on Mid-Latitude HF Propagation Paths: Observations and a Data-Driven D-Region Model Article (PDF Available) in Space Weather 3(1). high-latitude ground stations in the context of over-the-pole operations.

This paper sketches the arena of high-latitude propagation and cites previous data, models, and studies. We extrapolate from a comprehensive ‘‘northern experiment’’ to draw inferences about what can be achieved under pathological conditions. RPSICited by: 6. Characteristics of high latitude meteor scatter propagation parameters over the 45 - MHz band.

Details Propagation effects on military systems in the high latitude region PDF

AGARD conf. on propagation effects on military systems in the high latitude region. Abstract. The effects of anomalous high latitude ionization upon radio wave propagation are described for the main types of disturbances: Sudden ionospheric disturbances, relativistic electron events, magnetic storms, auroral disturbances, and polar cap : T.

Røed Larsen. Propagation effects on military system in the high latitude region: Papers presented at the 36th Symposium of the Electromagnetic Wave Propagation Panel held in Fairbanks, Alaska, USA, June, by North Atlantic Treaty Organization (Book).

Ionospheric scintillation effects on GPS L-band signals and ultimately on satellite navigation are a growing concern. This concern is due primarily to the losses of lock and cycle slips that. Find helpful customer reviews and review ratings for The High-Latitude Ionosphere and its Effects on Radio Propagation (Cambridge Atmospheric and Space Science Series) at Read honest and unbiased product reviews from our users.5/5.

The ultimate theoretical limitations on space-based synthetic aperture radar (SAR) image formation that are imposed by the ionosphere are examined. The effects on the SAR image are derived from first principles, and it is shown that the ionosphere will cause defocusing in both the range and along track directions.

The performance of an autofocus procedure is then Cited by: of propagation, the associated elevation angles, and the signal to noise ratio may be predicted. These prediction techniques assume that propagation is along the great circle path and ignore the effects of various large-scale ionospheric structures.

For example, the presence of the midlatitude trough (a region of depleted electron density)Cited by: 5. Sferics are electromagnetic pulses generated by lightning events.

Their maximum spectral energy is in the frequency range below 15 kHz.

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These powerful Cited by: 5. the high-latitude region by the fact that little evidence has been found to date for bimodal log(CkL) distribu- tions at high latitudes [Secan and Fremouw, ]. The distributions at high latitudes are typically normal, which allows us to ignore (i.e., set to zero) four of the seven parameters in equation (6) (the three parameters.[1] A two‐pronged study is under way to improve understanding of the D region response to space weather and its effects on HF propagation.

One part, the HF Investigation of D region Ionospheric Variation Experiment (HIDIVE), is designed to obtain simultaneous, quantitative propagation and absorption data from an HF signal monitoring network along with solar X‐ray Cited by: Rodger, A.S. and J.R. Dudeney, The variability and predictability of the main F-region trough determined using digital ionospheric sounder data, in propagation Effects on Military Systems in the High Latitude Region, AGARD Conference proceedings No.NATO, paris, November