摘要
阐述了全向激光告警系统的结构特点,阐明了成像型全向激光告警系统的两个限制因素:光学系统像面照度均匀性和大视场角之间的矛盾;大视场接收和窄带光谱滤波技术之间的矛盾。分析了鱼眼镜头像面照度的均匀性,以及窄带干涉滤光片对于不同入射角的透射率。综合鱼眼镜头、窄带滤光片和面阵探测器3个硬件之间相互关系,给出激光全向告警探测灵敏度的估算公式,并通过实验验证了其准确性。最后得出结论,为了保证像面的均匀性及系统探测灵敏度,鱼眼镜头和滤光片的参数要配合得当:在选择鱼眼镜头时,需酌情考虑其最大像方出射角;窄带光谱滤光片需满足一定的透射率要求,则要求鱼眼镜头出射光线的最大像方出射角要控制在滤光片有较高透射率的入射角范围之内。对全向激光探测告警系统的器件选择,使器件组合达到最佳的探测性能具有指导意义。
The design feature of the image omni-directional laser warning system was represented, and two restricted factors of the system were expounded,which were the contradiction between the illumination uniformity of the image-plane and the wide field of view, and the contradiction between the narrow-band spectrum filter and the wide field of view. The relationships among the fish-eye, narrow-band spectrum filter and the detector were analyzed.Then the sensitivity estimate-formula of the image omni-directional laser warning system was given. An experiment verified the accuracy of the estimate-formula. Finally, conclusion is drawn,in order to guarantee the illumination uniformity of the image-plane and the sensitivity of the system, the parameters of the fish-eye and the narrow-band spectrum filter should be fit. When selecting the fish-eye lens, the maximum emergence angle of the fish-eye lens should be considered,and it should be in certain angle range, in which the narrow-band spectrum filter has high transmissivity.These results are valuable for selecting the parts of the image omni-directional laser warning system, and the sensitivity of the system.
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第6期1038-1042,共5页
Infrared and Laser Engineering
基金
国家自然科学基金资助项目(60603097)
关键词
全向激光告警
大视场
照度均匀性
窄带滤光片
探测灵敏度
Omni-directional laser warning
Wide field of view
Illumination uniformity
Narrow-band spectrum filter
Detective sensitivity
作者简介
应家驹（1980－），男，福建南平人，博士生，主要从事光电对抗及防护方面的研究工作。Email：yjjoptics25@126．com
导师：王永仲（1944-），男，湖南澧县人，教授，博士生导师，硕士，主要从事光电对抗及防护方面的研究工作。
