Scintillations of Ku Band Satellite Signal Related to Rain Attenuation at a Tropical Location
نویسندگان
چکیده
Scintillations of a Ku-band satellite signal are observed in association with rain attenuation at Kolkata, India. The wavelet analysis of signal fluctuations, due to simultaneous occurrence of scintillations and attenuation, reveals the relative impact of different scales of refractivity structures on the signal at different instants of time. A positive relationship exists between the peaks in the global wavelet spectrum due to attenuation and scintillations. The power-law relationship between the standard deviation of high-pass filtered fast fluctuations and the attenuation value during rain events indicates that scintillations can be caused by both thin and thick layer of turbulence during rain.
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