The fundamental assumption that is made while space-time adaptive processing (STAP) technique is considered is that the signal to be processed takes on the form of a sequence of coherent pulses. Frequency modulated continuous wave (FMCW) systems are in widespread use because of their numerous advantages due among others to its non pulse character. It seems extremely important to look for a possibility of using STAP procedures in FMCW systems to make them even more attractive. The paper presents a simple analysis of a proposed approach to achieve this goal. A structure of the signal processor is presented and assumptions necessary to be fulfilled are defined. Effects of the proposed approach implementation in HF, I, and X bands are evaluated on the basis of selected parameters of the appropriate FMCW-STAP systems.