Generation of Unbiased Ionospheric Corrections in Brazilian Region for GNSS positioning based on SSR concept

Paulo Sergio De Oliveira Jr1, Joao F. Galera Monico2, Laurent Morel3, François Fund4, Stéphane Durand5 and Frédéric Durand5, (1)Unesp, Presidente Prudente, Brazil, (2)UNESP Sao Paulo State University, Presidente Prudente, Brazil, (3)ESGT – CNAM, Le Mans, France, (4)Geodata-Diffusion, Le Mans, France, (5)CNAM, Le Mans, France