【作者】 李俊良； 李鑫； 李允博；

【Author】 Junliang Li;Xin Li;Yunbo Li;Southeast University;

【机构】 东南大学；

【摘要】 本文研究了可编程电磁超表面在C波段脉冲雷达中的应用,即其在脉冲积累与相消技术中的实现机制。探讨了脉冲积累技术如何通过累积多次目标回波信号来增强信噪比,并有效提高目标检测能力。重点分析了电磁超表面在破坏脉冲积累过程中的作用。通过调控电磁波传播特性,电磁超表面能够精确控制信号的相位,进而实现对目标回波信号的相消,降低目标信号强度。这一技术使得雷达系统能够在复杂背景下实现对目标信号的削弱。通过实验验证,证明了电磁超表面在脉冲积累与相消技术中的可控性和高效性。本文的研究为提升C波段雷达的检测精度、抗干扰能力及复杂环境适应性提供了理论依据和技术支持。更多还原

【Abstract】 This study investigates the application of Programmable electromagnetic metasurfaces in C-band pulse radar, specifically their implementation mechanism in pulse accumulation and cancellation techniques. It explores how pulse accumulation enhances the signal-to-noise ratio(SNR) by accumulating multiple target echo signals, thereby improving target detection capability.The focus is on analyzing the role of electromagnetic metasurfaces in disrupting the pulse accumulation process. By manipulating electromagnetic wave propagation characteristics,metasurfaces can precisely control the phase of signals, thereby achieving the cancellation of target echo signals and reducing target signal intensity. This technology enables radar systems to attenuate target signals in complex backgrounds. Through experimental validation, the controllability and efficiency of electromagnetic metasurfaces in pulse accumulation and cancellation techniques are demonstrated. This study provides theoretical foundations and technical support for improving the detection accuracy, anti-interference capability, and adaptability of C-band radar in complex environments.更多还原