舰载高频地波OTH雷达电磁兼容性能分析及优化技术研究

Though Shipborne High Frequency Surface Wave Over-the-Horizon Radar is capable to increase the ship warning distance and improve the maneuverability, Complex superstructure would impact the electromagnetic characteristics of the shortwave antenna and mutual interference would be aroused between the multiple antennas arranged on the ship, the electromagnetic environment caused by which would decrease the electromagnetic compatibility. According the simulation design technology and applications at home and abroad, combined with the demands of electromagnetic compatibility design of the whole ship, this project will 1)present the electromagnetic compatibility analysis distributed simulation framework, overall structure and functional requirements of Shipborne High Frequency Surface Wave Over-the-Horizon Radar; 2) build the electromagnetic compatibility model of Shipborne High Frequency Surface Wave Over-the-Horizon Radar and develop its simulation platform; 3) provide the transmitted signal sideband suppression technology and antenna optimized layout scheme and verify the effectiveness. This system possess the broad application value and development prospects, taking advantage of the spatial location between the OTH Radar and the electronic devices and the visual display of three-dimensional data of the electromagnetic interference during the process of using, to clarify the 3D information and features of the research field and provide a theoretical basis for the ship electromagnetic security engineering design.

舰载高频地波超视距雷达能够大幅增加舰船预警距离、提高机动性能，但复杂的上层建筑会对舰船上短波天线的电磁特性产生影响，舰船上安装的多部天线之间也会互相干扰，由此产生的复杂电磁环境会大大降低舰船电磁兼容性能。 本项目根据国内外的仿真设计技术及应用情况，结合我国舰船总体电磁兼容性设计的需求，一是提出舰载高频地波超视距雷达电磁兼容特性分析的分布式仿真框架、总体结构及功能需求；二是建立舰载高频地波超视距雷达全舰电磁兼容模型，并开发其仿真平台；三是根据电磁兼容仿真模型提出舰载高频地波超视距雷发射信号边带抑制技术及天线优化布局方案，并验证其有效性。 该系统可以利用舰载高频地波超视距雷达和电子设备空间位置以及使用过程中的三维数据直观显示电磁干扰情况，了解研究区域的三维信息及综合特征，为舰船电磁安全性工程设计提供理论依据，具有广阔的应用价值和发展前景。