利用LMS阵列的中段制导链路抗干扰技术研究

The Application of LMS Array in Mid-course Guidance Link for Anti-jamming

为了提高制导武器在电子对抗环境下的抗干扰性能,在采用直扩体制的中段制导链路中使用LMS阵列,利用扩频通信的特点可以方便实现参考信号的提取而无需显式训练序列,进而能够在空域意义上实现对干扰的抑制。此外,为了评估中段制导链路所采用的抗干扰方法对制导武器整体抗干扰性能的影响,建立制导系统模型实现对制导过程的仿真并得到了不同干扰条件下的弹道,评估结果证明了文中所采用的抗干扰方法的有效性。

In order to improve anti-jamming performance of guidance weapons under poor electromagnetic environment, LMS array was ap- plied in mid-course guidance link system which uses direct sequence spread spectrum communication. By making use of the feature of spread spectrum communication, the reference signal can be generated easily without pre-knowledge of training signal, and then the inter- ference can be filtered in spatial domain. In addition, a model for guidance system was constructed to evaluate the effect on trajectory of guidance weapon using the anti-jamming method in mid-course guidance link. The simulation results show the effectiveness of the anti-jam- ming method.