Research

Analysis of strong ionospheric scintillation events measured by means of GPS signals at low latitudes during disturbed conditions


Reference:

Forte, B., 2012. Analysis of strong ionospheric scintillation events measured by means of GPS signals at low latitudes during disturbed conditions. Radio Science, 47 (4), RS4009.

Related documents:

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1719kB) | Preview

    Official URL:

    http://dx.doi.org/10.1029/2011RS004789

    Abstract

    Drifting structures characterized by inhomogeneities in the spatial electron density distribution at ionospheric heights cause the scintillation of radio waves propagating through. The fractional electron density fluctuations and the corresponding scintillation levels may reach extreme values at low latitudes during high solar activity. Different levels of scintillation were observed on experimental data collected in the Asian sector at low latitudes by means of a GPS dual frequency receiver under moderate solar activity (2005). The GPS receiver used in these campaigns was particularly modified in firmware in order to record power estimates on the C/A code as well as on the carriers L1 and L2. Strong scintillation activity was recorded in the post-sunset period (saturating S4 and SI as high as 20 dB). Spectral modifications and broadening was observed during high levels of scintillation possibly indicating refractive scattering taking place instead of diffractive scattering. A possible interpretation of those events was attempted on the basis of the refractive scattering theory developed by Uscinski (1968) and Booker and MajidiAhi (1981).

    Details

    Item Type Articles
    CreatorsForte, B.
    DOI10.1029/2011RS004789
    DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
    Publisher StatementForte_Radio_Science_2012_47_RS004789.pdf: © 2012 American Geophysical Union
    RefereedYes
    StatusPublished
    ID Code32791

    Export

    Actions (login required)

    View Item

    Document Downloads

    More statistics for this item...