Soil Moisture Mapping Using Sentinel-1A Synthetic Aperture Radar Data

Authors : Aliihsan ŞEKERTEKİN, Aycan Murat MARANGOZ, Saygın ABDİKAN

Pages : 178-188

Doi:10.30897/ijegeo.425606

View : 14 | Download : 5

Publication Date : 2018-08-01

Article Type : Research Paper

Abstract :The aim of this study is to estimate and map soil moisture distribution using C-band Synthetic Aperture Radar insert ignore into journalissuearticles values(SAR); data. Sentinel-1A is a new generation C-band SAR satellite, and in this study Sentinel-1A data acquired on 24 April 2016 were used to retrieve soil moisture map. An agricultural region in Bergama, a district of İzmir city, was chosen as the study area. In-situ soil moisture measurements were carried out in 20 test fields simultaneously with SAR data acquisition. The effects of soil moisture and local incidence angle on backscattering coefficient were analyzed, and then a multiple regression analysis was performed to generate an empirical model. The proposed model was evaluated using statistical metrics namely coefficient of determination insert ignore into journalissuearticles values(R 2 ); and Root Mean Square Error insert ignore into journalissuearticles values(RMSE);, and the results were 0.84 and 2.46 %, respectively. The obtained results showed that Sentinel-1A SAR data presented satisfying outcomes to estimate and map soil moisture content.
Keywords : Microwave Remote Sensing, Soil Moisture Mapping, Synthetic Aperture Radar, Sentinel 1