针对现有极低频（ELF）/超低频（SLF）电磁发射系统受电小天线（ESA）理论和技术制约，使得发射天线体积庞大、辐射效率低、需要极高发射功率，限制ELF/SLF通信手段在水下和跨越通信等领域应用的问题，本项目以颠覆依靠振荡电流激励的传统ESA理论和射频发射机架构为目标，旨在研究利用高性能永磁体的机械旋转运动直接产生低频电磁波的新型电磁发射技术，即旋转永磁式机械天线（RMBMA）。研究RMBMA的基础理论，构建基于其能量转换特性、电磁辐射和感应特性、机械旋转与控制特性的系统模型、时变电磁场分布与传播模型、Q值理论及其性能分析方法，提出磁源结构设计与磁场增强、高效旋转驱动和信息加载等设计与实现方法，研制ELF/SLF频段RMBMA原理样机并进行实验测试与验证，为推进该项颠覆性技术的创新发展、自主可控以及水下通信等前沿领域的工程应用提供理论和技术支撑。

As the existing extremely-low frequency (ELF)/ super-low frequency (SLF) transmitting systems limited by the theories and technologies of the traditional electrically small antenna（ESA）, it leads to bulky antenna and low transmitting efficiency, moreover, it needs high transmitting power. These disadvantages restrict the ELF/SLF bands radio communication in the field of underwater and cross-domain communication. In order to subvert the traditional ESA theory and transmitter architecture excited by the oscillating current in the conductor, this project aims to study a new electromagnetic transmission technology that directly produces low-frequency electromagnetic waves by the mechanical rotation motion of high-performance permanent magnet, namely the rotating-magnet based mechanical antenna (RMBMA). Based on energy conversion characteristics, electromagnetic radiation and induction characteristics, mechanical rotation and control characteristics, this project focuses on the study of RMBMA's basic theory, establishes its system model, time-varying electromagnetic field distribution and propagation model, Q value theory and performance analysis method, and presents the design and implementation methods such as magnetic source structure design and magnetic field enhancement, high efficient rotation drive and information loading, develops the ELF/SLF bands RMBMA prototype for experimental verification. The research will provide theoretical and technical support for promoting the innovation and autonomous control of the core technology and its application in the frontier fields of underwater communication.