激光导引头时序抗干扰技术分析及实验

Experiment and analysis on time sequence anti-jamming technology of semi-active laser seeker

为提高激光导引头抗主动式干扰的能力,在时序上通常采用时间波门精确控制技术、波门内首/末脉冲锁定技术和脉冲时序相关技术等手段。在分析激光导引头的时序抗干扰技术的基础上,针对国内外现役激光导引头所采用的时序抗干扰措施进行了实验设计,对风标式、动力陀螺式、框架式3类激光导引头的抗干扰技术进行了理论分析和实验研究。结果表明:根据激光导引头的受干扰的情况,可实现对采用的时序干扰措施进行较为准确的预测,并据此提出了一种更为有效的激光有源欺骗干扰方法。

These technologies of precisely controlling the time wave gate, locking the first/last pulse within the wavegate and correlating the pulse time sequence are usually recommended to enhance the ability of the laser seeker to resist the active interference. Based on analyzing the time sequence anti- jamming technology of semi-active laser seeker, an experimental project was designed for the research on the time sequence anti-jamming technology which was used in the semi-active laser seekers commissioned home and abroad. The anti-jamming technology of three kinds of semi-active laser seekers was analyzed theoretically and studied experimentally. Three kinds of semi-active laser seekers were areodynamically stabilized, dynamic-gyro type and frame type with stable tracking platform. It is shown that the adopted measures of time sequence anti-jamming can be predicted more exactly and a more effective laser active jamming method is proposed.