基于混合积分方程方法的多舰系统短波天线间隔离度分析

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

基于多层快速多极子算法的混合积分方程方法,采用在线天线表面建立电场积分方程,在舰船船体表面建立磁场积分方程的求解方法,计算列队式多舰系统短波天线的隔离度参数。研究结果表明,列队式短波收发天线的隔离度曲线的变化趋势相近,隔离度值随频率和舰间距的增加而整体振荡增加,隔离度的变化区间为37～110 dB;舰船上层建筑等金属体的遮挡作用对多舰系统短波天线隔离度的影响起主要作用。

The hybrid integral equation method based on multi-level fast muhi-pole technique was carried to calculate the isolation of the short-wave antennas mounted on the warship formation. The magnetic field integral equation and the electric field integral equation were used to calculate the hull and short-wave antennas of the warship formation respectively. It was concluded that the change tendency of isolation curve is close, and the isolation increases as the frequency and distance between ships increase, with the ranged from 37dB to 110dB. In addition, the obstruct effect from overtop structure on ships makes great effect on the isolation between short wave antennas on warship formation.