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Transionospheric propagation predictionsThe current status and future prospects of the capability to make transionospheric propagation predictions are addressed, highlighting the effects of the ionized media, which dominate for frequencies below 1 to 3 GHz, depending upon the state of the ionosphere and the elevation angle through the Earth-space path. The primary concerns are the predictions of time delay of signal modulation (group path delay) and of radio wave scintillation. Progress in these areas is strongly tied to knowledge of variable structures in the ionosphere ranging from the large scale (thousands of kilometers in horizontal extent) to the fine scale (kilometer size). Ionospheric variability and the relative importance of various mechanisms responsible for the time histories observed in total electron content (TEC), proportional to signal group delay, and in irregularity formation are discussed in terms of capability to make both short and long term predictions. The data base upon which predictions are made is examined for its adequacy, and the prospects for prediction improvements by more theoretical studies as well as by increasing the available statistical data base are examined.
Document ID
19800016202
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Klobucher, J. A.
(Air Force Geophysics Lab. Hanscom AFB, MA, United States)
Basu, S.
(Emmanuel Coll. Boulder, Colo., United States)
Basu, S.
(Emmanuel Coll. Wash., United States)
Bernhardt, P. A.
(Stanford Univ. Washington, D.C., United States)
Davies, K.
(NOAA Katlenburg-Lindau, Germany)
Donatelli, D. E.
(Regis Coll.)
Fremouw, E. J.
(Phys. Dyn., Inc., Bellevue)
Goodman, J. M.
(NRL)
Hartmann, G. K.
(Max-Planck Inst. fuer Aeronomie)
Leitinger, R.
(Graz Univ.)
Date Acquired
August 10, 2013
Publication Date
December 1, 1979
Publication Information
Publication: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2
Subject Category
Communications And Radar
Accession Number
80N24695
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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