remote sensing ArticleSea Ice Thickness Estimation Based on Regression NeuralNetworks Using L-Band Microwave Radiometry Data from theFSSCat MissionChristoph Herbert 1,2,*,? , Joan Francesc Munoz-Martin 1 , David Llaveria 1 and Miriam Pablos 2,3and Adriano Camps 1,21 CommSensLab, Universitat Politècnica de Catalunya (UPC) and Institut d’Estudis Espacials de Catalunya(IEEC/CTE-UPC), Jordi Girona 1-3, 08034 Barcelona, Spain; joan.francesc@tsc.upc.edu (J.F.M.-M.);david.llaveria@upc.edu (D.L.); camp...