高重频激光干扰技术机理分析  

Analysis of High Repetition Frequency Laser Jamming Technology

作　　者：华磊[1] 庄永峰[1] 朱国利[1] 郭豹[1] 杨寿佳[1] 

机构地区：[1]中国电子科技集团公司第二十七研究所,河南郑州450047

出　　处：《红外》2014年第2期21-25,共5页Infrared

摘　　要：在光电对抗领域,高重频激光干扰是一种非常有效的干扰技术。从高重频激光干扰的原理出发,通过对由干扰激光功率引起的激光导引头接收系统信噪比下降的现象进行理论分析和数值计算,理清了以往对高重频激光干扰的认识。数值计算结果表明,在目标距离一定的情况下,导弹制导系统的信噪比会随干扰激光功率的增加而减小;在激光干扰功率相同的情况下,导弹制导系统的信噪比会随目标距离的增加而减小。在目标距离为6000 m的情况下,当干扰激光功率大于0.4 w时,导弹制导系统的信噪比降到1以下,此时制导系统不能有效地从各种噪声之中检测出目标回波信号,说明被攻击目标能够得到有效保护。High repetition frequency laser jamming is a highly effective jamming technology in the fieldof opto-electronic countermeasure. Starting from the principle of high repetition frequency laser, thedecrease of the signal-to-noise ratio （SNR） of the receiving system in a laser seeker caused by jamming laserpower is analyzed theoretically and calculated numerically, and hence the previous overall understandingof high repetition frequency laser jamming is clarified. The numerical calculation result shows that fora missile guidance system, its SNR may be reduced with the increase of jamming laser power at a givendistance and may be reduced with the increase of the target distance in the case of same jamming laserpower. When the target is at the distance of 6000 m and the jamming laser power is greater than 0.4 W,the SNR of the missile guidance system may be reduced to less than 1. At this time, the missile guidancesystem can not detect the target echo signals from different noises, and so the target to be attacked canbe protected effectively.

关 键 词：激光干扰 高重频 类噪声 信噪比 

分 类 号：TJ765.4[兵器科学与技术—武器系统与运用工程]