针对声呐和雷达同时隐身的水下目标有源共形超表面新型隐身关键技术研究

Metasurface cloaking research is the frontier of the fields of electromagnetics, materials science, acoustics etc. due to its unique electric, magnetic, acoustic properties. But in the basic theory and application it is still facing technical challenges and scientific problems, including the electromagnetic and acoustic metasurface controlling mechanism, stealth performance, bandwidth and device integration, etc. This project is intended to study the key technologies of active conformal metasurface invisibility cloaking for sonar and radar. The analysis of electromagnetic and acoustic active metasurface cloaking is carried out with both theoretical simulations and experimental methods. We will study the characteristics of the controlling mechanism, excitation mode, transmission and reflection properties of active conformal metasurface cloaking. We will develop a new method to stimulate and manipulate the physical characteristics of the metasurface cloaking unit. We will carry out underwater invisibility cloaking test for sonar and radar. Our study will provide a necessary step to push the active conformal metasurface cloaking devices in submarines and other underwater equipment stealth applications. This project will provide a solid theoretical basis and experimental method for the design and applications of new underwater target stealth material based on metasurface technology. It will promote the practical application of new stealth materials and devices in this field, which has important academic significance and various application prospects.

超表面隐身材料因其独特的电、磁、声学性能，成为当前电磁学、材料学、声学等领域的交叉学科前沿和热点，但在基础理论及应用仍面临技术挑战和科学难题，包括电磁波和声波超表面隐身的调控机理、隐身性能、隐身带宽以及隐身器件集成等。本项目拟研究针对声呐和雷达同时隐身的有源共形超表面新型隐身关键技术，基于理论模拟和实验手段，从有源超表面隐身单元的电磁波和声波调控模拟分析辅以实验研究着手，重点研究有源共形超表面新型隐身的调控机理、激发模式、透射与反射等特性；发展并获得激发和控制超表面新型隐身单元物理特性的新方法和新途径；开展针对声呐和雷达探测的水下隐身试验，从而为有源共形超表面新型隐身器件应用于潜艇等水下装备的隐身提供必要的条件。本项目将为基于超表面技术的新型水下目标隐身材料及其应用提供坚实的理论基础及实验分析方法，为推进该领域新型隐身材料和器件的实用化提供关键技术支撑，具有重要的学术意义和广泛的应用前景。

本项目拟研究针对声呐和雷达同时隐身的有源共形超表面新型隐身关键技术，基于理论模拟和实验手段，从有源超表面隐身单元的电磁波和声波调控模拟分析辅以实验研究着手，重点研究有源共形超表面新型隐身的调控机理、激发模式、透射与反射等特性；经过艰苦的努力，我们在超表面隐身方面取得了很大的进展，我们设计了一种宏观的超表面地毯式隐身斗篷，斗篷由多层超表面组成，其能够在单元格中表现出特殊的电导和电感空间分布。因此，该隐身斗篷可以同时完全地控制几个独立频率的反射相位。目前的超表面隐身斗篷可以基于多共振原理在双频下工作。此种设计方法将对未来的宽带宏观斗篷设计有极大帮助，具有重要的学术意义和广泛的应用前景。