Computer Science – Sound
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jatp...48..849l&link_type=abstract
(EISCAT Scientific Association, International EISCAT Workshop, 2nd, Aberystwyth, Wales, Sept. 9-12, 1985) Journal of Atmospheric
Computer Science
Sound
3
Convolution Integrals, F Region, Ionospheric Ion Density, Ionospheric Sounding, Altitude, Eiscat Radar System (Europe), Ionospheric Composition, Temperature Profiles
Scientific paper
In order to study the influence of altitude smearing on the determination of ionospheric parameters by incoherent scatter, use is made of the fact that EISCAT single pulse measurements in the F1-region have been made simultaneously with two different altitude resolutions. It is shown that the measured parameters can be very far from the real parameters, due to this altitude smearing. An attempt to deconvolve the profiles is made, which works well in the case of smooth power variations within the diffusive volume, but diverges in the case of strong structured power variations, such as those produced by energetic auroral particle precipitation into the upper atmosphere. In this last case it was, however, possible to deduce the real profile with quite good accuracy by a trial and error method. The geophysical consequences of the large discrepancy between measured and actual parameters (density and temperatures) are discussed.
Lathuillere Ch.
Lejeune G.
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