Design of Non-uniform Frequency Time Modulated Metasurface for False Targets Jamming

A design of non-uniform frequency time-modulated metasurface (NF-MTS) is proposed for false target jamming of linear frequency modulated (LFM) radar. The NF-MTS is composed by a number of independent elements, each of them temporally modulated by a different modulation frequency. This system allows realizing desired false targets in the range profile of the radar system. Thanks to the control of the modulation scheme in each element of the metasurface and the combined non-uniform frequency response of the overall surface, NFMTS has enhanced performance on control of false targets at different observation angles, having more flexible capacity of scattered field manipulation comparing to metasurface based false target jamming only through uniform frequency time modulation.