부산대학교 도서관

A novel concept is introduced here for thwarting the linear frequency modulated (LFM) radar's susceptibility to false target jamming. This innovative approach involves the creation of a non-uniform frequency time-modulated metasurface (NF-MTS). The NF-MTS consists of numerous distinct elements, each undergoing individual temporal modulation at varying frequencies. This intricate system empowers the generation of spurious targets strategically positioned within the radar's range profile. The capability to control the modulation patterns of each metasurface element, coupled with the collective non-uniform frequency response across the entire surface, endows the NF-MTS with superior performance in the manipulation of false targets from diverse observation angles. This approach surpasses conventional metasurface-based false target jamming, which relies solely on uniform frequency time modulation, by offering a significantly enhanced and more adaptable capacity for the manipulation of scattered radar signals.