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Published in:
2006 | OriginalPaper | Chapter
Tropospheric Water Vapor from LEO-LEO Occultation: Estimation by Differential Attenuation Measurements near 20 GHz
Authors : F. Argenti, F. Cuccoli, L. Facheris, E. Martini
Published in: Atmosphere and Climate
Publisher: Springer Berlin Heidelberg
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A differential measurement concept is presented for retrieving the total content of water vapor (Iwv, Integrated water vapor) along the propagation path between two counter-rotating Low Earth Orbiting (LEO) satellites. This approach, referred to as DSA (Differential Spectral Attenuation) method, is based on the simultaneous measurement of the total attenuation at two relatively close frequencies in the K band, and on the estimate of a “spectral sensitivity parameter” that is highly correlated to the Iwv content of the LEOLEO link in the low troposphere. The DSA approach has the potential to overcome all spectrally “flat” and spectrally correlated phenomena, including atmospheric scintillation.