高重频激光对激光导引头的干扰机理实验研究

The Experimental Research of the Jamming Effect of High-Repetition-Laser for Laser Seeker

研究高重频激光对半主动激光制导导引头的干扰效果与导引头的信息处理能力和干扰信号样式的关系.设计了一套激光半主动制导对抗半实物仿真系统,从信号级研究了导引头的工作原理并设计了多种抗干扰算法进行信号处理,提供了干扰效果评估方案.分析了导引头在搜索阶段高重频激光对导引头编码识别过程的影响,以及导引头在跟踪阶段高重频激光的干扰频率、能量、位置和干扰时机对导引头不同抗干扰措施条件下的干扰效果.实验结果表明,干扰脉冲的能量越大,干扰源与目标的夹角越大,干扰效果越明显;提高干扰激光脉冲的频率会提高干扰成功的概率,缩小导引头的时间波门的宽度会增强导引头的抗干扰能力.

This paper is devoted to the relationship between the jamming effect of high-repetitionlaser for semi-active laser guidance seeker and the capacity of seeker information processing and the style of the jamming signal. In this paper a set of semi-active laser guidance countermeasure of semi-physical simulation system was designed. The principle of the seeker was investigated from the signal level, and a variety of anti-jamming algorithm for signal processing was designed, and assessment scheme of jamming effect was provided. In the seeker search stage lays emphasis on the research of the influence of high-repetition-rate laser for seeker coding identification process. In the seeker tracking stage, the interference effect of different anti-interference measures was studied, such as the interference frequency, energy, position and interference time. The experimental results show that, the interference pulse energy is larger, interference source and target angle is larger and interference effect is more obvious. Improving the frequency of interference laser pulse will increase the probability of success of the interference, and reducing the width of the time window of seeker will enhance seeker anti-interference ability. A signal jamming effect evaluation scheme is provided to offer a full set of experimental platform and theory foundation for the through discussion of laser semi-active guidance interference.