The formation steps leading to the creation of a computer simulator for an extended naval target as viewed by an approaching Interferometric Inverse Synthetic Aperture Radar (IF-ISAR) seeker sensor is presented in this paper. The conceptual model development, the modelling approach, the implementation results and the project success details are outlined. The novelty of this effort is the valueadded ability of the simulator to further treat the generated data for rate of change processing leading to the assembly of height information about the target under scrutiny which can be used either for friend-orfoe identification decisions or intelligent expendable decoy programming.