Study on imaging quality of intrapulse intermittent modulation jamming technology based on metasurface

Passive jamming technology based on metasurface is a hot topic in the field of electronic countermeasures. Currently, the existing research mainly focuses on the feasibility of false target deception from the level of jamming technologies. However, the effect of false target deception has not been given attention. For SAR jamming methods, the imaging quality of false targets will directly affect the deception effect of the image, which also determines the effectiveness of the jamming method. In this paper, a passive jamming method for intrapulse intermittent modulation by metasurface is studied. This method uses metasurface to perform intrapulse intermittent modulation of SAR-emitted radar signals. By calculating the imaging indicators such as resolution and sidelobe ratio of the pseudo-target imaging effect, the deception effect of the jamming method on the SAR system using the RD imaging processing algorithm is analyzed. As the order and intermittent modulation frequency of the false target increase, the quality indicators such as the resolution and sidelobe ratio of the false target will gradually decrease. Simulation experiments verify the correctness of the research conclusions.