摘要
为了对抗CCD成像制导武器,采用激光辐照方式进行压制性干扰极为有效。由于距目标较远,难以保证激光束能够视场内入射进行饱和干扰,故实施激光视场外干扰。首先进行了视场外激光干扰VC-210B型CCD探测系统的实验,然后利用激光束通过光学系统时的衍射和散射概念,深入分析了视场外激光干扰CCD探测系统的原理,讨论了激光散斑对比度与入射角之间的关系。实验结果和分析结论表明:视场外激光可实现对CCD探测系统的有效干扰,这种干扰主要是由于CCD探测系统的结构对视场外激光的散射和衍射以及视场外激光散斑效应引起的。
The laser suppressant interference is very efficient to confront CCD imaging guidance weapons.The laser beam usually can′t enter the view of field and disturb the CCD because of the long range from the objects.So it′s more important to implement off-axis laser disturbance.Firstly,the experiments of off-axis laser disturbing VC-210B CCD were carried out.Then the theory of off-axis laser disturbance was analyzed deeply by using the conceptions of diffraction and scatter as laser beam passing through optical system.Finally,the relation between the incidence angles and speckle contrast was discussed.Experimental results and theory analysis show that off-axis laser can disturb CCD imaging detection system efficiently.The main source is the diffraction and scatter,especially the speckle effect of off-axis laser introduced by the restructure of CCD detection system.
出处
《红外与激光工程》
EI
CSCD
北大核心
2011年第5期840-843,共4页
Infrared and Laser Engineering
基金
国家自然科学基金(51005242)
863课题基金(2006AA703218D)
海军航空工程学院青年基金(HYQN200805)
