B. Arbesser-rastburg, Propagation issues for present and future satellite systems, Univ. de Rennes, vol.1, 2002.

C. M. Bishop, Neural Networks for Pattern Recognition, 1995.

A. V. Bosisio, C. Mallet-;-chandrasekhar, S. , and R. Transfer, Influence of cloud temperature on brightness temperature and consequences for water retrieval, Radio Sci, vol.33, issue.4, pp.929-939, 1960.

G. Cibenko, Approximation by superpositions of a sigmoidal function, Math. Control Signals Syst, vol.2, pp.303-314, 1989.

S. J. English, C. Guillou, C. Prigent, and D. C. Jones, Aircraft measurements of water vapour continuum absorption at millimeter wavelengths, Q, J. R. Meteorol. Soc, vol.120, pp.603-625, 1994.

E. Gérard and L. Eymard, Remote sensing of integrated cloud liquid water: Development of algorithms and quality control, Radio Sci, vol.33, pp.433-447, 1998.

, Exceedance time percentage of attenuation at 20, 30, 40 and 50 GHz with only one visible satellite (thick line), and with two simultaneously visible satellites

S. Haykin, Neural Networks: A Comprehensive Foundation, 1999.

K. Hornik, M. Stinchcom, and H. White, Multi-layered feedforward networks are universal approximators, Neural Networks, vol.2, pp.359-366, 1989.

T. Kohonen, Self Organizing Maps, 2001.

H. J. Liebe, G. A. Hufford, and M. G. Cotton, Propagation modeling of moist air and suspended water/ice particles below 1000 Ghz, paper presented at 52nd Specialists Meeting of Electromagnetic Wave Propagation, Adv. Group for Aerosp. Res. and Dev, vol.27, issue.5, pp.661-680, 1992.

J. S. Marshall and W. M. Palmer, The distribution of rain drops with size, J. Meteorol, vol.5, pp.165-166, 1948.

E. Moreau, C. Mallet, and C. Klapisz, Effects of aspherical ice and liquid hydrometeors on microwave brightness temperatures, in Microwave Radiometry and Remote Sensing of the Earth's Surface and Atmosphere, ESA WPP-083, pp.291-298, 1994.

R. Polonio and C. Riva, ITALSAT Propagation Experiment at 18.7, 39.6, and 49.5 GHz at Spino d'dda: Three years of CPA statistics, IEEE Trans. Antennas Propag, vol.46, issue.5, 1998.

P. W. Rosenkranz, Water vapor microwave continuum absorption: A comparison of measurements and models, Radio Sci, vol.33, issue.4, pp.919-928, 1998.

M. Tiedtke, Representation of clouds in large-scale models, Mon. Weather Rev, vol.121, pp.3040-3061, 1993.

L. Tsang, J. A. Kong, and R. T. Shin, Theory of Microwave Remote Sensing, 1985.

F. T. Ulaby, R. K. Moore, and A. K. Fung, Microwave Remote Sensing Fundamentals and Radiometry, vol.1, 1981.

. Ààààààààààà-À-l, P. Barthes, C. Gole, and . Mallet, Planétaires (CETP), pp.10-12