Title page for ETD etd-07152010-020309
|Type of Document
||Haidara, Fatim M.
||Rain scatter interference in satellite links
||Master of Science
|Bostian, Charles W.
|Pratt, Timothy J.
|Stutzman, Warren L.
|Date of Defense
Scattering by rain in addition to inducing attenuation and depolarization in satellite links
can create intersystem interference. This type of interference was investigated extensively in
the 1970's for terrestrial links, but little has been done to study its effects on modern and
future satellite links. This thesis reports on studies of the potential interference created by the
scattering of an uplink signal into an adjacent satellite and the inverse case where a downlink
signal is scattered into the earth station of an adjacent satellite system. The thesis describes
the rain medium in a way which emphasizes the computation of the needed single-drop
scattering coefficients using the extended boundary condition method (EBCM). The
development of the experimental and theoretical study of rain scattering interference is then
reviewed. Three computation methods for the interfering power are presented and compared.
The first one, based on the radiative transfer equation, includes multiple scattering
considerations, while the two other techniques take only the first order multiple scattering into
account. The impact of such interference is then studied and an experiment involving the
OLYMPUS and ACTS spacecraft is proposed.
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