[IEEE IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. (IEEE Cat. No.03CH37477) - Toulouse, France (21-25 July 2003)] IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477) - Ocean wave spectrum and radar cross-section analysis from coincident ENVISAT ASAR observations and airborne polarimetric radar measurements performed during the VALPARESO experiment