多种转发干扰下的脉内脉间波形综合优化设计

复杂电磁场景中多种转发干扰并存, 严重影响了雷达的探测效果, 而传统的波形设计方法多针对一种特定的干扰样式进行分析, 面对多种干扰时对抗效果有限。针对此问题, 对脉内线性调频相位编码脉间频率捷变波形进行了综合优化设计。首先, 在分析脉内脉间多种转发式干扰样式的基础上, 兼顾转发干扰与波形本身特性进行代价函数设计。之后, 利用遗传模拟退火算法优化波形参数, 具有良好的抗干扰效果。最终, 数值仿真实验验证了所设计波形的有效性。

Comprehensive optimization design of intra and inter pulse waveforms under multiple repeater jamming

In complex electromagnetic scenes, many kinds of repeater jamming exist at the same time, which affects the detection of radar seriously. Nevertheless, traditional waveform design methods mostly focus on one kind of specific jamming, and the effect is limited in the face of multiple repeater jamming. To solve this problem, comprehensive optimization design of waveform is proposed, which combines linear frequency modulated along with phase coded intra pulse and frequency agile modulated inter pulse. Firstly, based on the analysis of multiple intra and inter pulse repeater jamming patterns, the cost function is designed considering the characteristics of both jamming and waveform. Then, the genetic annealing simulated algorithm (GASA) is used to optimize waveform parameters in order to have good jamming suppression effect. Finally, simulation experiments verify the effectiveness of the proposed waveform.