1. A system for generating images, comprising: an interactive synthetic aperture radar (SAR) processor for generating an image using SAR data; a module associated with the SAR processor for allowing a user to interactively select different settings for each of a group of parameters for generating different images by the interactive SAR processor using the SAR data, wherein the module associated with the SAR processor comprises a real-time feedback loop for adjusting the settings of the group of parameters, based on the selected settings of the group of parameters, to progressively generate images, a new image being generated in response to each adjustment of the settings of the group of parameters; and a subaperture imaging tool to permit interactively switching between a spatial resolution and a temporal resolution.