基于混合积分方程方法的舰艇编队短波电磁环境分析研究

Analysis on Electromagnetic Environment of Short Wave Antennas on Warship Formation Based on Hybrid Integral Equation

舰艇编队短波电磁环境复杂度与编队舰艇数量及其队形配置密切相关,工程上可用短波收发天线间的隔离度予以表征。基于多层快速多极子算法的混合积分方程方法,本文采用在鞭状天线表面建立电场积分方程,同时在舰艇壳体金属表面建立磁场积分方程的方法,详细计算了舰艇编队短波天线间的隔离度参数。结果表明,舰艇编队短波天线隔离度随频率和舰间距的增加而整体振荡增加;上层建筑等金属体的遮挡对舰艇编队短波电磁环境的影响起主要作用,本文的研究工作可为海战场舰艇编队复杂电磁环境效应研究奠定基础。

Complexity of shortwave electromagnetic environment on warship formation is closely related to the number of ships and the disposition of formation,which can be attributed by the antennas isolation.In this paper,hybrid integral equation method based on multi-level fast multipole technique is carried to calculate the isolation of the short-wave antennas mounted on the warship formation.In detail,the magnetic field integral equation and the electric field integral equation are used to calculate the hull and short-wave antennas of the warship formation respectively.It can be concluded that the change tendency of isolation curve is close and the isolation increases in oscillation as the frequency and distance between ships increase.In addition,obstruct effect from overtop structure on ships makes great effect on the isolation between short wave antennas on warship formation.The research work in this paper lays a foundation for the study of complex electromagnetic environmental effects of warship formation.