基于遗传算法的相关干涉仪测向方法

摘要

Correlative interferometer could obtain unknown radiation source electromagnetic wave phase information, to calculate the arrival angle with the relevant algorithm, which had been widely used in engineering.However, the phase of the antenna was often distorted by platform impact, which leaded to the deviation of direction finding.Based on the interferometer system, the genetic algorithm was used to optimize the baseline and weight of the direction finding system.Combined with typical examples, the change of direction finding error before and after optimization was analyzed and compared.It was proved that this method could improve the direction finding precision, and the proposed method had practical significance fore airborne direction finding.%相关干涉仪体制可以获得未知辐射源电磁波的相位信息,借助相关算法解算出波达角,在工程上得到了广泛应用.但天线相位往往会受平台影响发生畸变,并导致测向偏差.文中基于干涉仪体制,采用遗传算法对测向系统的基线和权值进行了优化.结合典型实例,比较分析了优化前后测向误差的变化.证明该方法能够显著改善测向精度,提出的方法对机载测向具有实用意义.