A Kind of Broadband Target Jammer of Syntheic Aperture Radar Based on Information Metasurface

Over the past decade, jamming methods for Synthetic Aperture Radar (SAR) target detection and recognition, such as generating false targets, electromagnetic (EM) deception, and spoofing, have garnered significant attention. Distinguished from conventional SAR jamming methods, the target jamming scenario for SAR based on a new man-made material cloak introduces enhanced possibilities. These technologies exhibit the capability to effectively scatter incident EM waves in arbitrary or desired directions, thereby concealing pertinent information associated with the critical target. In this paper, we propose a broadband target jammer of SAR based on an information metasurface, which integrates intelligent information processing algorithms with space-time-coding digital metasurface, providing the capability to manipulate incident EM waves freely to achieve multi-mode jamming protections for critical targets. In simulation experiments, the results demonstrate adjustable EM deception and the generation of multiple false targets without any cooperation with the SAR system. Our work brings the available protection strategies for SAR closer to a wide range of real-time, broadband, and controllable applications, enhancing the concealment of critical targets in hot conflict zones.