High resolution SAR imaging along circular trajectories

After a first series of full circle SAR acquisitions in L and P-bandsduring a 2004 joint FOI-ONERA campaign in Sweden, ONERA experimented in 2006 high resolution (15cm) polarimetric, full circle acquisitions in France and Germany using its X-band sensor. In order to cope with narrower antenna pattern and aircraft attitude fluctuations, a steerable antenna was used. Furthermore, an experimental setup for retrieving high accuracy trajectory was installed. This paper describes the processing of this signals.