Abstract
On the basis of street vector data and computer-aided design models of buildings, simulated synthetic aperture radar (SAR) images are created using a SAR simulator. By comparing image chips from a SAR image to simulated street data, correspondences are found, which are used as the first step for the geo-referencing. Afterwards, the geo-referencing can be improved using control point information, which is provided from correspondences between the images of buildings created from a SAR simulator and the respective sections of unreferenced SAR images. The hardware-accelerated real-time SAR simulator SARViz is used for the simulation. On the basis of this approach, the initial geo-referencing of airborne SAR images can be improved, using even the results of simplified and fast SAR simulation methods.
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