Method for constructing focussed radar images

摘要

The method involves dividing a lighting period of radar into successive sub-periods overlapping with each other temporally. Resolution images of the radar are generated for each subperiod. Autofocus treatment is applied on the resolution images. The resolution images are coherently combined (301) by the autofocus treatment so as to generate focused radar images. A geographical zone is illuminated by the radar during lighting period. The combined images are finally treated for obtaining desired resolution images.