Motion Compensation Processing of Airborne SAR Data

This paper presents a motion compensation algorithm to focus high resolution SAR data taken from an airborne sensor. The basic idea is to fragment the sensor trajectory into smaller segments that can be modelled as linear or quadratic. The synthetic antenna is then considered as an array of smaller subarrays. The algorithm can easily adapt and trade efficiency for sensor path irregularity. In fact the algorithm is more efficient if the segments are longer. Experimental results with real airborne data confirm the correctness of the approach.