2-LOOK METHOD FOR CORRECTION OF ROLL ERRORS IN AIRCRAFT-BORNE INTERFEROMETRIC SAR

A technique is described for compensating for aircraft roll in dual an tenna interferometric SAR from an airborne platform. The technique doe s not rely on prior knowledge of the target scene, or input from an in ertial navigation unit (INU). The technique is tested on real data fro m the DRA's C-band interferometric SAR, which is fitted to an Andover aircraft, and the results are compared with output from a Litton-93 me dium accuracy INU.