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 LEO-LEO link in the low troposphere. The DSA approach has the potential to overcome all spectrally "flat" and spectrally correlated phenomena, including atmospheric scintillation.
Tropospheric water vapor from LEO-LEO occultation: Estimation by differential attenuation measurements near 20 GHz / F. Argenti;F. Cuccoli;L. Facheris;E. Martini. - STAMPA. - (2006), pp. 169-181. (Intervento presentato al convegno 2nd International Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2) tenutosi a Graz, AUSTRIA nel 2006) [10.1007/3-540-34121-8_15].
Tropospheric water vapor from LEO-LEO occultation: Estimation by differential attenuation measurements near 20 GHz
ARGENTI, FABRIZIO;CUCCOLI, FABRIZIO;FACHERIS, LUCA;MARTINI, ENRICA
2006
Abstract
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 LEO-LEO link in the low troposphere. The DSA approach has the potential to overcome all spectrally "flat" and spectrally correlated phenomena, including atmospheric scintillation.
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