Crop classification in central Navarre (Spain) using polarimetric radar images
Arantzazu Larrañaga Urien(1), Jesús Álvarez-Mozos(2) and Lourdes Albizua Huarte(1)
(1) Trabajos Catastrales, S.A., C/ Cabárceno, 6, 31621 Sarriguren, Navarre, Spain
(2) Public University of Navarre, Los Tejos, Arrosadia s/n, 31006 Pamplona, Navarre, Spain
In the region of Navarre (Spain) supervised classifications using optical remote sensing data have been used for many years. These classifications are used operationally to obtain data for the elaboration of the annual crop statistics. However, cloud cover frequently hampers the acquisition of optical data, causing classification results to be unrealistic if the available images are not sufficient.
Radar sensors are not affected by clouds and, apart from that, the new generation of space-borne radar sensors available offer new capabilities such as the ability to operate with multiple polarizations simultaneously, acquiring polarimetric observations.
The main objective of this study is to evaluate the feasibility of polarimetric radar observations for crop classifications in central Navarre. ALOS/PALSAR and RADARSAT-2 observations will be used. After a detailed polarimetric analysis, polarimetric signatures of the different crops will be obtained and different classification schemes will be tested. Obtained classification maps will be compared with reference ground data and results obtained from optical observations using classical supervised classifications.