Abstract
The paper describes the possibility of using the fusion (synthesis) of optical and radar satellite images of medium resolution for the formation and analysis of water surfaces.The method of formation of synthesized images of optical and radar data at the object level including separate formation of water surfaces by optical and radar data and their subsequent joint analysis is presented.The technique of formation of the synthesized images of optical and radar data at the point level, including their geometrical binding to each other, selection of the method of data fusion, synthesis and their analysis is also described.The methods of fusion of optical and radar data are illustrated by the example of passing a flood in 2017 on the Ishim river in the districts of the city of Petropavlovsk in North Kazakhstan region and the village of Gastello in Akmola Oblast.