Extraction of unique information on sensor and target locations in SAR imaging scenarios with large apertures and scenes

We consider airborne SAR imaging of large scenes from large and curvilinear synthetic apertures, in a situation when the platform trajectory and the target locations are known only approximately, but the distances (ranges) between sensor locations and the (point) targets can be determined to a better accuracy, possibly comparable to the wavelength. In these circumstances, we examine different SAR scenarios which provide different amount of simultaneous information on the sensor and target locations.