Method for constructing focused radar images comprising at least the following steps: • dividing the illumination period of the radar into p sub-periods, two successive sub-periods temporally overlapping; • selecting n 0 successive sub-periods from the p sub-periods and, for each of these n 0 sub-periods, carrying out radar acquisitions in order to generate an image IM_0 x having a resolution R 0; • applying an autofocus processing operation to each of the n 0 images 1M_0 x generated; • combining the n 0 images which have been processed by means of autofocus in order to generate at least one new focused radar image IM_1 x, • the method being characterised in that the steps of combining the images and autofocus are repeated in an iterative manner in order to obtain an image having the desired resolution R fin, n 0 focused images being generated following an autofocus processing operation, the method comprises an iterative phase which comprises at least the following steps: • initialising the variables n i and R i as follows: n i = n o and R i = R 1; • as long as the resolution R i is coarser than the resolution R fin desired: • distributing the n i images having resolution R i generated previously into n i+1 groups, each of the groups containing at least two images, the images being successive in time; • for each of the n i+1 groups of images having resolution R i: • combining the images of the group in order to generate a new image having a finer resolution R i+1; • applying an autofocus processing operation to the new image having a finer resolution R i+1; • updating the variables n i and R i, n i+1 becomes n i and R i+1 becomes R i. • dividing the illumination period of the radar into p sub-periods, two successive sub-periods temporally overlapping; • selecting n 0 successive sub-periods from the p sub-periods and, for each of these n 0 sub-periods, carrying out radar acquisitions in order to generate an image IM_0 x having a resolution R 0; • applying an autofocus processing operation to each of the n 0 images 1M_0 x generated; • combining the n 0 images which have been processed by means of autofocus in order to generate at least one new focused radar image IM_1 x, • the method being characterised in that the steps of combining the images and autofocus are repeated in an iterative manner in order to obtain an image having the desired resolution R fin, n 0 focused images being generated following an autofocus processing operation, the method comprises an iterative phase which comprises at least the following steps: • initialising the variables n i and R i as follows: n i = n o and R i = R 1; • as long as the resolution R i is coarser than the resolution R fin desired: • distributing the n i images having resolution R i generated previously into n i+1 groups, each of the groups containing at least two images, the images being successive in time; • for each of the n i+1 groups of images having resolution R i: • combining the images of the group in order to generate a new image having a finer resolution R i+1; • applying an autofocus processing operation to the new image having a finer resolution R i+1; • updating the variables n i and R i, n i+1 becomes n i and R i+1 becomes R i.