NDLI: Spatial Characteristics of Mid-Latitude Ionospheric Scintillations in VHF Radio-Satellite Transmissions

Content Provider	Springer Nature Link
Author	Hajkowicz, L. A.
Copyright Year	1998
Abstract	Simultaneous recordings of VHF radio-satellite transmissions from Transit satellites were obtained at three latitudinally displaced sites in the vicinity of Brisbane (36°S geom.lat): St.Lucia (S), Taringa (T) and Boreen Pt. (B). The meridional displacement were: S-T (2.12 km) and T-B (121.0 km). The location of the site B was such that it was almost directly under a field point MT (i.e. the point at an ionospheric height when the ray-path from a satellite to the site T was tangential to the magnetic field). A number of scintillation patches (so-called the P-type events), showing large enhancement (more than 10 dB) near the local magnetic zenith, were predominantly recorded at the sites S and T whereas the site B showed little or no scintillation activity. The anomalous situation is explained in terms of the geometry between the ray-path and magnetic field, associated with different positions of MT and MB (for the site B). It is suggested that the predominant effect in causing scintillation-producing irregularities becoming invisible from the site B, is associated with an alternative model of scintillation generation based on specular reflection of radio signal.
Starting Page	41
Ending Page	51
Page Count	11
File Format	PDF
ISSN	12178977
Journal	Acta Geodaetica et Geophysica Hungarica
Volume Number	33
Issue Number	1
e-ISSN	15871037
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-08-22
Publisher Institution	Quarterly of the Hungarian Academy of Sciences
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	specular reflection field aligned irregularities mid-latitude scintillation Geophysics/Geodesy interference
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geology Geophysics

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