气垫平台上装备了大量的电子、电气设备和大功率发射天线，同时，气垫平台的船体与一般舰船相比，在垫态航行时艇体与海水绝缘，电磁兼容十分特殊。天线之间的耦合是无线电系统间电磁干扰的主要传输途径，天线隔离度是分析天线间电磁干扰影响的关键指标，开展天线间隔离度分析对电磁干扰研究十分重要。针对气垫平台船体的特殊性和电磁兼容性特点，基于电磁仿真基本原理，建立了气垫平台电磁模型，采用电磁仿真方法分析计算了天线间隔离度，并分析了气垫平台与海平面连接和不连接时隔离度影响。通过实测进行了验证，为开展总体电磁兼容工程研制提供了技术支撑。
A mass of electronic and electric equipment as well as transmitting antennas are installed on a hovercraft. Since the main body of the hovercraft is insulated to the sea surface, the EMC of this platform is different from other ships. The coupling between antennas is the main contribution of the EMI between wireless systems, and it is also the key indicator to describe the EMI effects of the antennas. As a result, analysis of antenna isolation, an indicator developed and employed to investigate the coupling between antennas, plays a key role in the EMI research. In this paper, the EM model of a hovercraft is established according to its EMC characteristics together with the basic EM theory. Then, the antenna isolation is calculated using MoM, and validated by the measured data. Besides, the effect of the connection between the hovercraft platform and the sea surface is also studied. Some useful conclusions are drawn, providing help for the EMI control in the EMC engineer.
2020,42(4): 154-158 收稿日期：2018-07-21
DOI：10.3404/j.issn.1672-7649.2020.04.030
分类号：TP319.56
作者简介：张勇(1975–)，男，高级工程师，从事装备电磁兼容论证、试验和标准等研究
参考文献：
[1] 陈穷, 蒋全兴. 电磁兼容性工程设计手册[M]. 北京: 国防工业出版社, 1993.
[2] 汪鹏, 张炜. 舰船短波天线隔离度的预测与分析[J]. 舰船电子工程, 2007, 2: 194
[3] 吴小川. 复杂舰船环境下电磁场分布特性研究[D]. 哈尔滨: 哈尔滨工业大学, 2010.
[4] 崔晓红. 基于MoM舰船短波单鞭天线的辐射场分析[D]. 哈尔滨： 哈尔滨工程大学, 2007.
[5] 乔晖. 基于三场耦合的电子设备吸波材料优化设计[D]. 西安: 西安电子科技大学, 2009.
[6] 刘源, 焦金龙, 王晨, 等. 《FEKO仿真原理与工程应用》[M] 北京: 机械工业出版社, 2017.
[7] 张勇, 刘俊伟, 李超, 等. 舰船电磁兼容性评估指标体系及评估应用研究[J]. 舰船科学技术, 2014, 36(7): 103–104
[8] 美国国防部. MIL-STD-464C《Electromagnetic Environmental Effects Requirements for Systems》[R]. 2010.
[9] 美国国防部. MIL-HDBK-237D《Electromagnetic Environmental Effects and Spectrum Supportability Guidance for the Acquisition Process》[S]. 2005。
[10] 中国航空技术研究所. GJB1389A-2005, 系统电磁兼容性要求[S]. 中国人民解放军总装备部, 2005;
[11] 张勇, 汤仕平, 龚亚樵. 舰船电磁兼容性标准体系的构建[J]. 舰船科学技术, 2011, 23(3): 95–96
