V. V. Kirdyashkin, Yu. G. Sosulin
Work is devoted to development of algorithm automatic overlapping SAR-image with optical image if they have a geometric differences then overlapping SAR-image with digital map of district. The solution of this problem allows us to specify the coordinates of the aircraft forming SAR-image, i.e. create extreme-correlation method for navigating using the radar system with synthetic aperture (SAR). The algorithm for determining the geometrical differences in scale, rotation angle and the spatial shift between the SAR-image and optical image was developed. Research on selection of reference sites earth's surface, which can be carried out automatically combine are held. Identified the properties and determined the size in pixels of reference sites. Presented algorithm allows to overlap images in real time with high accuracy.