The effects of uncompensated range migration on moving target imaging using wideband SAR

Conference: EUSAR 2006 - 6th European Conference on Synthetic Aperture Radar
05/16/2006 - 05/18/2006 at Dresden, Germany

Proceedings: EUSAR 2006

Pages: 4Language: englishTyp: PDF

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Barber, Brian C. (Defence Science and Technology Laboratory, Farnborough, UK)

Moving targets generally have both along track and range velocity components. The range component can move a target through many range cells over a long spotlight aperture for wideband fine resolution radars and this reduces the azimuth resolution. Analysis using a stationary phase method shows that the azimuth resolution is determined by the time taken by a target to move through a range resolution cell. An algorithm is developed which can, in principle, determine the horizontal components from changes in target blur width over the aperture.