1. A method for acquiring SAR images for interferometric processing, comprising: acquiring, by one airborne SAR sensor, SAR images of one and the same area with an acquisition geometry such that to enable interferometric processing of said SAR images; said method being characterized by an acquisition geometry in which each SAR image of the area is acquired in a respective direction of acquisition that defines a respective squint angle with respect to the direction of flight and in which the squint angles are such that to determine a mean squint angle different from zero; wherein the SAR images are acquired by only one SAR sensor that is airborne by an air/satellite platform, uses only one antenna and acquires the SAR images in only one pass of the air/satellite platform.