Title :
Sea-State Determination Using GNSS-R Data
Author :
Marchan-Hernandez, J.F. ; Valencia, E. ; Rodriguez-Alvarez, N. ; Ramos-Perez, I. ; Bosch-Lluis, X. ; Camps, A. ; Eugenio, Francisco ; Marcello, Javier
Author_Institution :
Dept. de Teor. del Senyal i Comunicacions, Univ. Politec. de Catalunya, Barcelona, Spain
Abstract :
Global Navigation Satellite Systems (GNSS) signals can be used to infer geophysical data related to the surface where they scatter. When dealing with the sea surface, its state influences the GNSS scattered signals and, therefore, the GNSS reflectometry (GNSS-R) observables. The aim of the Advanced L-band Emissivity and Reflectivity Observations of the Sea Surface 2008 field experiment was to gather experimental data to study the relationship of the GNSS-R delay-Doppler maps (DDMs) and the sea state. This work describes the field campaign and the main results obtained, where among them is the use of the DDM volume as a roughness descriptor weakly affected by the GPS satellite geometry.
Keywords :
Global Positioning System; geophysical equipment; oceanography; ALBATROSS 2008 field experiment; Advanced L-band Emissivity and Reflectivity Observations of the Sea Surface; GNSS reflectometry observables; GNSS-R data; GNSS-R delay-Doppler maps; GPS satellite geometry; Global Navigation Satellite Systems scattered signals; delay-Doppler map volume; geophysical data; roughness descriptor; sea-state determination; Distributed decision making; Global Positioning System; L-band; Reflectivity; Reflectometry; Rough surfaces; Satellite navigation systems; Scattering; Sea surface; Surface roughness; Delay-Doppler map (DDM); Global Navigation Satellite Systems reflectometry (GNSS-R); sea state;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2010.2043213
