摘要
阐述了用激光主动扫描法侦察远方飞航导弹来袭方位的原理及实验技术。以电视导引头光学系统为例,运用矩阵光学追迹法对影响“猫眼效应”回波强度的因素进行了定性和定量的分析。研究结果表明:回波强度受导引头光路中光学镜头的相对孔径、摄像管靶面倾斜和离焦的影响较大;扫描激光光束的入射角等因素对回波强度也有一定的影响。在主动扫描装置与被探测导引头相距约5000m、扫描光束的入射角为0.1rad的条件下,导引头光学系统反射面倾斜和离焦使得侦察装置接收到的回波能量与发射脉冲能量之比由理想条件下的1.0%分别下降到了0.004%和0.3%。
The principle and experimental technique of the attack directions of cruise missiles detection based on cat s eye effect are described. The factors that influence the intensity of the reflection wave were analyzed both quantitatively and qualitatively with the method of ray tracing. Research results show that the relative aperture of optical lens, the incline and defocusing of reflection plane in TV seeker optical system reduce the intensity of the ＂cat＇s eye＂ reflection. For example, the ratio of the reflection energy of TV seeker and the pulse energy of scanning laser goes down from 1.0 % （under the ideal reflection condition） to 0.004% （for the incline） and 0.3% （for the defocusing） respectivdy, while the distance between the laser scanning setup and TV seeker is 5000m and the incidence angle of scanning laser is 0.1rad.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2006年第4期623-626,共4页
Optical Technique
